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Speed density vs maf ford

speed density vs maf ford (Poor mans DFI :-) ) It allows you to run different MAF's or Speed density mode. For speed density, a computer marked with DA1 or DB1 (1987-88 Mustang) will work. MAF Airflow vs. 9L speed density systems incorporated knock sensors which enabled the engines to tune in the optimum ratios a bit closer (limited range), but the 1990 MAF computer for the 2. The easiest way to tune them if you have a MAF sensor is to simply disconnect the sensor; the fans will run and the SES will come on, but you will be in speed density mode. Mass air flow sensor equipped cars fuel either directly from or by a blended model of both mass air flow and speed density calculations. Would it be possible to convert my speed density I6 (1992, stock F-150) to a MAF configuration? Ok, I know it's possible, but is is feasible? I've seen MAF conversion kits for the 5. Output Voltage: This table is used to calibrate the MAF sensor. Designed to be attached to the 1. When SD mode is activated the ECU will disregard the MAF sensor reading and will instead calculate mass air-flow based on engine speed, manifold pressure and air temperature, allowing the MAF sensor to be removed and a larger intake to be installed. Speed Density (MAP) reguarded as superior to the factory ford speed density 1988 was the first year some of the mustangs from california had MAF, "MASS AIR FLOW" and "SPEED DENSITY " are simply different routes to achieving the same thing, and that's control of the fuel air ratio. . the airflow is actually measured, using (you guessed it) a Mass Air Flow (MAF) sensor. Our Pro-M mass air conversion wiring harnesses and sensors will have your motor converted in no time! so as some of you know i am installing a turbo on my 2006 TJ 2. I started with the bank fired speed density system, but plumbed up my MAF system and just left it unplugged. MAF vs Speed Density I am running a 3" GM MAF in draw through but have a MAP and IAT sensor installed and logging so would be just a matter of tuning for me. In other words, if there are no engine modifications that require the greater fuel, then you should not have put the system on. Im pretty sure paul has speed density on one of his cars, but im pretty sure he uses a PMS to tune it himself. The MAF will kick on at 4000RPM + and the speed density will handle everything below. 30A9 SOME of the stock 2. speed density. Stevie, stick with the MAF, I know how you like your cars to be, and with as often as you'll drive it, the MAF will be a better choice. In the forum you will find an informative tech area, a place for Member’s journals, Vendors with special Members pricing, and monthly contests. both methods have flaws and advantages. DA1 - 87-88 Speed Density 5. Tuning Your Ford EFI System - Inside The Black Box Part 1. Posted By: eastfizz on 09/15/09 08:49am Your system is most likely speed density. I'm going maf-less and I know I gotta solder the iat sensor to the current iat wiring in the maf plug. 302 MAF vs speed density I was reading the MEFI write up in the tech garage and it seems like the no brainer choice for Chevy engines. 0L Mustang 5-spd DC- 87-88 Speed Density Auto 87-93 Ford Mustang 5. 0 (Allows Cold Air Kit Installation On Non Mass Air Car) Chrome Finish Set up a giveaway There's a problem loading this menu right now. Whatever - either speed density versus MAF works like I've outlined and you're intent on arguing a weak position by changing the terms of reference, or DCX has designed the only speed density system that emulates a MAF, and the aftermarket pcm-tuners are snake-oil. T-Bird Map To MAF-May 2007-Question: My car is an ’88 Ford Thunderbird sport coupe with a 302 V-8 and the stock computer and emissions Methods of calculating, measuring and determining Load: Speed-Density, Mass Air Flow and Alpha-N Load is essentially a measurement of airflow since, as discussed in our Volumetric Efficiency article an engine is essentially a large air pump. Since fitting an air intake tube and MAF sensor in a retrofitted engine bay is often difficult, many aftermarket EFI conversion kits rely on speed density systems. Another neat side-effect of having both Speed Density and MAF working together side by side, that if you detect MAF failure (DTC codes P0102 or P0103), the computer seamlessly falls back onto then pure Speed Density mode, so you can safely drive it to the mechanic. 0 F150 First off, truck is an 87 F-150 5. There were some 1997 Ford 460 powered trucks and vans built with mass air flow for California, however I have a 1997 460 powered Rexhall built in California with a chassis build date of Feb 1997 and it is speed density. 0L EEC-IV, WAY1 catch code box to run it. Alright guys I'm going speed density and have the AEM map sensor and AEM iat sensor, I made a harness for my map sensor so it's plug and play. Out of interest, does anyone think that it would be possible to add an adaptor with two sensor ports between the inlet manifold and the throttle body to allow the MAP and/or temp sensor to be inlet side of the throttle body on the VII and VIIIs without fitting a IX manifold? Uses internal MAP sensor – can be used on both cars with factory MAF or speed density Mounts in the stock location – case is specifically designed to use factory mounting points Fully Tunable Engine Control! Considering the case of an intake mass airflow based system such as shown in Figure 5, the steady state gain from EGR valve position to intake manifold pressure and VGT vane position to mass air flow can be positive or negative depending on the speed and load condition of the engine and the settings of the EGR valve and VGT vanes. I just did a speed density to maf conversion and now my car runs super rich for about 15 minutes until it warms up, after it warms up it is fine. The MAF sensor is located somewhere in the intake stream typically away from sharp bends and typically at least 8-10 inches away from the throttle body however these rules are not always followed. Because they don't make a kit for this, I will be re-wiring the harness, and using a PCM and MAF out of a 95 f-150, 5. I'd love to see a stock fuel map if you have access to one, I could go over that for days The Texas Speed & Performance 100mm MAF is 100% American made! The package includes the billet MAF sensor housing, a new GM sensor, a 4" silicone coupler, and MAF sensor adapter harness which allows plug and play installs on the most common applications. the engine itself is looking for a fuel/air ratio matching the load and rpm range to maximize its power curve. At its most basic level, the conventional hot-wire MAF sensor relies on the cooling effect that fast-moving air has on a “hot wire” resistor suspended in the air stream (see Photo 1). My dad was talkin about how my mpgs are pretty bad with all this commuting and maybe its time for FI. Well this spring in getting a pheonix "midnight blue" crate engine, the very basic 300hp/330ft lbs small block 350, gen 1 vortec heads, etc. I went to SD to get rid of the elbow/MAF and am running a street and performance intake filter on it. The option is to move the MAF before the throttle body, which allows you to run vent-to-atmosphere BOVs, temperature compensation is more accurate because it is post intercooler, blow through is less of an issue vs draw through when having a MAF in the flow path. RPM), the other has MAF vs. Well, I have been calling about some MAF engines. I can't tell you much about the tuning side of it as I just leave that to the experts. MAP as mentioned above. I am afraid the truck intake won't fit, and I am not wanting to take the time/money to experiment. If all you have behind you airbox is a big tube running all the way back to your throttle body right beside the intake, you have a speed density car. 9L DOES NOT have a knock sensor provision (big oops by Ford). The biggest issues, in my opinion, are injectors, calibration and emissions. Obviously the table values themselves will not be the same. . What I'm worried/over thinking is the iat sensor. Mass Air Flow Sensor Kit by Edelbrock®. Speed Density vs MAF IGOTASTi is an online forum and community for all Subaru WRX STi enthusiasts. SD and it's probably a Ford vs. mass air flow vs. 3 speed density to Mass Air Flow? Looking at getting rid of speed density for mass air on my 1988 mustang gt any suggestions? I have 88 mustang gt with speed density want to convert to mass airflow wich would be better in horse power. The more proper way is to choose "Speed Density" in the "Switches" table in TunerCat, and run a log with that tune loaded. MAF vs speed density - posted in Fourth Generation Pontiac Firebird (1993 - 2002): On my 1993 is a speed density sensor well I pulled my engine and did a bunch of mods including a Llyold Elliot heads cam package. Speed Density logic has been added to the AccessPORT and AccessTUNER capabilities, enabling the tuning of large turbo builds and very high horsepower applications using the stock ECU. 2010 Ford Focus RS mk2 - 723bhp 610lb ft torque 1st 500BHP E5 in the UK Running on Speed Density on Stock H8 Ecu Does it eliminate the use of the MAF sensor? Due to the MAP sensor, the speed density system can compensate for variations in weather and altitude. Speed density vs MAF load measurement How to configure and use a data logger After completing this course you will have the knowledge and skills to confidently begin tuning cars with a commercial or open source reflashing package. and get it until all cells are within -2% and then enable the maf and disable the map and dial the maf sensor in until it is within -2% in all cells. Simultaneous ultra-high-speed rigorous datalogging capabilities are closely-coupled with the realtime-emulation / tuning-on-the-fly for the ultimate tuning experience. By contrast, Mass Air Flow (MAF) systems use a sensor mounted in front of the throttle body that directly measures the amount of air inducted into the engine. I have a Buick Grand National engine setup and am running in SD mode right now. You can change intake,heads,and exhaust and have basically no effect on speed density. Re: READ ME: All about Intake Air Temperature / CAI / MAF One could wrap the intake tube with insualation to prevent the air from heating up while traveling from the head light area to the intake manifold but I imagine the benefit would be marginal. im going to do one on the Flareside when this 302 goes down. What system did you use? I have a pulsar motor and want to change over. Mustang Speed Density Systems vs. RPM (or MAP/BAP vs. The mustang computer will work on the 351, but you may need to have it tuned to make it perfect. I already have a maf meter and some injectors (19lbs off my mustang). MAF is a more robust, but also more complicated system that actually measures and uses the amount of "mass air flow" to add the right amount of fuel. Mass Air Flow. another thing looking at the generated graphs I will post you can see ex Whether you do Maf, or SD your car will make the same power. K&N type filters work great, but remember, oil gets on the down stream sensors, like the MAF, and corrodes them more frequently. MAF measures actual air flow into the engine, and uses the oxygen sensors to provide feedback and fine tune the measurement. 9. 4l in this year had its fuel managed by a MAFor if it was a speed density fuel systemPlease Do i have a MAF or a speed density fuel system - Jeep Wrangler Forum For this reason, this valve works best with speed density ecu systems that don't use an air meter (VAM or MAF). 0 and trying to get more out of it. From what i know of it so far, and im new to the foxes, speed density wont adjust your fuel flow to account for increases in air from things like intake, manifold, tb. Speed Density vs MAF I just want some opinions/ facts about running a GM MAF with MAFT vs the MAFT Pro with Speed Density. 6-L Pentastar V6 is a Chrysler development and is made in the company's Trenton, MI, engine plant. what changes would that do?, half the people i talked to said yes convert it, gives more room for horsepower, and others said no, waste of time and provides better tuning and performance reliability. As the name implies, it uses the engine speed vs boost pressure and temperature (that's your air density) to control the engine parameters. 25" flange included with the blow off valve. 0t running speed density or MAF for tuning Im not sure im even asking this question correctly but is there anything you cant do to the Speed density vs MAF - Hyundai Genesis Forum Google search A MAF can be used in conjunction with SD, but because the stock MAF uses the intake air temp input to the ECU, you have to disable speed density's use of the air temperature sensor for airflow calculation. a question arose of wether the 2. But, because a speed density system provides an indirect measurement of air flowing into the engine, it lacks the accuracy to meet modern emissions and performance standards. Except for the addition of the wiring to support the MAF, the two outputs to the TAB & TAD solenoids, and the addition of a fuel pump monitor circuit, the pin out on a Mustang '86-'88 speed densety EEC is the same as the '89-'93 mass air . com '97 Cobra - VT billet stroker shortblock, LLX4, TwEECer RT v1. This BBK 5. Ok well I guess my original question was not right. I have been reading about converting SD to MAF and was trying to see This kit was developed to allow the use of a mass air meter on cars that were originally equipped with a speed density air intake setup. I did not understand the difference in speed density vs MAFT. The MAF sensor works by outputting a voltage signal that is proportional to the airflow through the meter. In a nutshell, PCMs using the Speed/Density (SD) system calculate the airflow into the engine based on RPM, air temperature, manifold pressure, volumetric efficiency (VE) stored in tables in the PCM, barometric pressure (often), throttle angle and so on. High Performance Academy 9,842 views. 4l. The computer (MAF or speed density) uses the O2 sensor to monitor the result of its calculated fuel values and can adjust the fueling as necessary. An alternative to the Ford MAF sensor is the Infiniti (Nissan) Q45 MAF sensor, which apparently flows more air than any other stock MAF sensor. MAF to Speed density conversion on an VIII ECU / Mapping. 75" diameter should be capable of delivering plenty of air. The Texas Speed & Performance 100mm MAF is 100% American made! The package includes the billet MAF sensor housing, a new GM sensor, a 4" silicone coupler, and MAF sensor adapter harness which allows plug and play installs on the most common applications. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. A. Running a 1MB ECU don't remember the number, with a segment swapped tune. In transient conditions the ECU will blend MAF readings with calculations based on the VE table using MAP/IAT/RPM. Maybe he will step in here and give his suggestions. Chevy type discussion. Mass Air Systems The EEC-IV computer works in conjunction with another type of engine control system, depending on the year of the car. I personnal like the MAF better than MAP and I think that is the one true advantage the Ford Mustang has over us. Want to convert your speed density setup to a mass air meter system? Late Model Restoration carries everything you need to get your motor switched over to a MAF setup. And then I will tune my ve table based off what my long term fuel trims say. Speed Density Speed Density systems accept input from sensors that measure engine speed (in rp m) and load (manifold vacuum in kPa), then the computer calculates airflow requi rements by referring to a much larger (in comparison to an N Alpha system) prepr ogrammed lookup table, a map of thousands of values that equates to the engine?s Speed Density VS MAF First this is an assembled truck, never built as far as I can find out; DBC 8. Speed Density: Extrapolates the amount of air being ingested into the engine by measuring the amount of intake vacuum and formulating volume by comparing that to the known characteristics of a specific cam. When calibrated properly there is no sacrifice in drive ability, your car will drive just like stock. www. A MAF can be used in conjunction with SD, but because the stock MAF uses the intake air temp input to the ECU, you have to disable speed density's use of the air temperature sensor for airflow calculation. Exact age and mileage are unknown, but it is old as the part number, serial, and calibration are vibri-pen etched on the sensor cover. As I understand it, the OAT sensor is used by the ECU to help with engine idle in cold weather and as a fallback to allow a MAF-based system to run in a limp mode as a speed-density configuration. It has an clear inside diameter of 3. An article on the differences, efficiency, Pro’s and Con’s of each with the basics of how they work on your motor to provide CFM flow and control MAP Sensor VS. I wrote that last sentence wrong, I meant that cars that have both sensors and are MAF based don't use the MAP sensor for fuel control while cars that do not have a MAF need a MAP for speed density. I just built a 351W for my speed density '88 Bronco that turned out great, I used the Comp Cams speed density cam. probably 331 for the reliability. im stuck between either keeping my speed density system (got an 1986 Mustang by the way) or convert to MAF. They "check" the MAF by looking at MAP, and have an accepted range of MAF vs. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Ford Idle Air Control (IAC) valve test (how to adjust minimum idle speed) [HPA Q&A] Which is better? | Speed Density vs MAF - Duration: 3:07. If the MAF goes outside the range expected by comparison to MAP, the ECU assumes the sensor is faulty, sets a code and then reverts to speed-density mode, which is RPM vs. (A MAP sensor is needed as well. The only difference you can be frustrated and pissed of tuning Speed density, built the VE from scratch if you feel like it, or you can get your car dial in with the Maf, then use the maf to build the VE tables, a featured offered in ECMlink. These are cheap on eBay. MAP Sensors. Convert speed density to mass air flow - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. ? Speed Density A MAF sensor isn’t the only way for the ECU to calculate engine load and a common alternative is to use a manifold pressure sensor (MAP sensor) instead. Speed Density vs MAF If this is your first visit, be sure to check out the FAQ by clicking the link above. 19 inches (80mm). This includes standalone ecu's like PiMP/PiMPx, Megasquirt, Haltech, F. 0L Speed Density CAI Adapter Kit is designed to allow you to install the 1986-1993 5. T, etc. RPM. ) a mass air flow swap aint bad actually. So the combination of no good MAF available and needing to tune your VE tables anyway mean that a lot of performance applications just go speed density. The 3. Because a Mass Air flow car uses a "Mass Air Flow Sensor" (MAF) to measure actual airflow into the engine directly at the *THROTTLE BODY*! A Speed Density car uses a "Manifold Air Pressure Sensor" (MAP) and RPM to *CALCULATE* how much air is entering the engine. 0 V-8 A3M Mass Air Flow Computer (ECU EFI PCM) 100%Working Image. Speed density has 2 hoses going to the intake. Speed Density to MAF If you swap long block for long block, eveything should be a direct swap. (Been googling for hours :)) In case a picture helps: Like I said, I've been looking for quite a while, and I can't find anything. Summit sells a MAF conversion harness that plugs right into the speed density plug for around $80. 0 Mustang that does not have the factory MAF. The more dependable less "finicky" speed density has me hooked. Most direct way to measure is by a maf sensor. Doing a MAF conversion will not fix whatever problem your have with the car. Comparing SCT DCX software to Ford software is really like comparing apples to oranges. " Converting a Ford Thunderbird's MAP sensor into a MAF. 0l V8 from the outdated speed density (SD) to the modern mass-air system. speed density As a refresher on speed density diagnostics, ­remember that speed density and mass airflow (MAF) systems react oppositely to air leaks through the intake duct and manifold at closed throttle. but would it be Well, I have been calling about some MAF engines. I work at a ford dealer and mentioned the option of Speed Density so some of the techs and they all said don't do it as all they have seen in ford was problems and since Ford switched to a Speed Density to MAF If you swap long block for long block, eveything should be a direct swap. According to my brother all you need to do to switch to mass air from speed density is to get a computer and a wiring harness with a mass air sensor or buy a premade harness form 1 of the bronco sites for plug and play. For the fuel adjustments I'm working with the base fuel table (lambda x tp x rpm) and slope of map vs aircharge. Everything I see talks about finding a used harness, swapping pins on the plugs, etc. Convert speed density to maf keyword after analyzing the system lists the list of keywords related and the list of websites with related content, in addition you can see which keywords most interested customers on the this website A dirty or contaminated Ford MAF usually causes a low inferred BARO, and also causes the MAF to over estimate idle air flow and underestimate air flow under load. Speed Density by Mike_D » Tue Jan 17, 2006 2:04 am [align=center] This article details the differences as well as the pros and cons of a Mass Air System vs. To better understand the evolution of the modern speed density system, let’s take a brief look at the conventional hot-wire mass airflow (MAF) sensor. Mass Air vs. those from the I6 EA - AU Falcon. Speed Density is a must for those with high powered Subaru's or anyone that wants to use a vent to atmosphere blow off valve. As far as a requirement, only Jegs would know that one. The MAP sensor is a key component in a Speed Density fuel injection system, and measures pressure and absence of pressure (vacuum) at the intake manifold. Even when operating in MAF only mode the SD tables will be utilized in calculations. 0, E4OD. Is this possible without buying a whole kit from ford racing($800). A mass air set-up is much more agile than a speed density system in that it meters the air via the Mass Air Flow sensor (MAF), and, using input from the sensors at its disposal, makes tuning This guide aims to provide tuning tips and method for tuning Speed Density (SD) or MAP sensor based EECs, i. cause the plan is that it'll either get a 331 or 347 stroker. SOME of the stock 2. Speed density is more or less assuming how much air is entering the engine, and can be very wrong when the computer is not making the right "assumptions. 0L-HO engines used Speed Density metering. Original idea was to use a TwEECer RT and a Bronco 5. This device continues the tradition and heritage of our highly-integrated, low-cost, high-quality tuning tools from GM and Honda into the Ford arena. The harness won't install directly, but everything you need can be taken from the mustang harness and added to the truck harness to make it work. "MASS AIR FLOW" and "SPEED DENSITY " are simply different routes to achieving the same thing, and that's control of the fuel air ratio. Convert 1990 Ford Mustang LX 2. Its very accurate, and adjusts well to engine modifications. A MAP sensor measures the air pressure or vacuum in the intake manifold and the mass of air entering the engine can be calculated from this using the ideal gas law. 0 gt. I need advice and feedback: Speed Density Vs. There are differences in the tuning but driveability is the same. The difference between MAF and speed density is one table has MAP vs. Update> speed denisty calibration Information on Dodge's speed density sensing using MAP sensor instead of MAF sensor. 1987-1988 Mustang (excluding 1988 Mustangs sold in California) came equipped with a speed density system. is it one of those "doesnt gain horsepower just supports it" things? and whats the difference. Ford has used MAF metering on ’88 SD vs MAF doesnt matter on the make of the car, its two diff concepts. If the MAF sensor stops working completely, the PCM will use the MAP sensor to operate as a speed/density engine management system. MAF I was thinking about it and it seems stupid to never know the actual airflow going into the engine, especially in a forced induction car. Shon Herron wrote: MAF is used in the fueling but most of it is in the PE table, MAF is more less used below PE and above a certain level of air flow, if the airflow is low the VE DA1 - 87-88 Speed Density 5. MAF Conversion Wiring 02-01-06 10:12 AM - Post# 866544 What would I need to do in order to swap an '88 Corvette L98 Engine with MAF to a speed density setup? I bought the engine and it has an '85 Corvette harness and computer, so I'm considering going ahead and swapping to speed density to avoid routing cold air and I don't have the MAF or MAF burnoff module, although I may be able to get these from the seller. alpha-N, Speed Density, and Mass Air. MAP table. Speed density EFI uses a manifold absolute pressure sensor (MAP), a throttle position sensor (TPS), an air intake temperature sender (ACT) , and the knowledge of the factory intake/exhaust tract I just did a speed density to maf conversion and now my car runs super rich for about 15 minutes until it warms up, after it warms up it is fine. The MAF accounts for the greater amount of air entering the throttle body where the MAP just adjusts for air density. The second is full Speed Density, with a MAP sensor connected, and a IAT sensor connected instead of the MAF. You may have to register before you can post: click the register link above to proceed. Mass air when turbochargeing a 5. MAP Sensor Any 5 volt MAP Sensor can be used, but to make things easier for yourself you should use one of the sensors below that the scaling for has already been added. the difference between MAF and speed density is 1-maf was from 85-87, speed density was from 88- on 2-you need a chip if you do any modifications to speed density (MAf will compensate up to 12% performance improvement) The difference between speed density and MAF is speed density uses a manifold absoulte pressure sensor called MAP for short and the MAF uses a mass air flow sensor which is a sensor that mounts into the air box or between the air boxt to the throttle body,The MAF sensor is alot more accurate at low Mass air flow is much more accurate that the old speed density system. The biggest thing to keep in mind with Speed Density mods is the cam lobe seperation angle, keep it at 114 or higher and you'll be alright. those run $500 tho. 25"-2. 0? Someone in the past told me that a car with speed density wont run right with upgrades like cams ect ect while, on the hand mass air will automaticaly adjust to cams and other goodies? Speed density Vs. ) Speed Density vs Mass Air Flow In general, I understand that SD is a derived value that can, besides other things, lag behind MAF which is a mostly measured, real-time value. S. I plan on going from speed density to maf and have been reading up on it. Aftermarket engine control systems geared for high boost application use a speed density (SD) measurement to calculate air charge for combustion. It looks like the costs are gonna be similar and right now I'm just wanting to get around 400whp out of this car. I also understand that MAF is the the value of choice when it comes to computing engine load for use in our ECU tables for several reasons, especially when modifying I have a 89' f150 w/ speed density and would like to convert to mass air. Speed Density will only have issue with mods when you cause erratic manifold pressure or you create enough fuel need beyond the stock fuel map values and variable values. This is a discussion on MAF vs Speed Density within the Computer & Tuning forums, part of the LSx Technical Help Section category; What is the advantage of a speed density tune over a MAF? on first glance it seems that its true speed density however ford uses MAF in order to find actual MAF and uses speed density calculations to find the corresponding MAP, it also has upper limit for mass air flow defined by finding the roots of the quadratic equation. There is really no way to say "This table exists, and this one does not", or that "This table is used instead of that one". another thing looking at the generated graphs I will post you can see ex MAF vs. This causes negative fuel trim corrections at idle and positive fuel trim corrections under load. The most common type of mass-flow sensor is the hot wire design: Air flows past a heated wire that’s part of a circuit that measures electrical current. MAP is an acronym for Manifold Absolute Pressure. e. Speed Density THE Speed Density (SD) feature changes the way the engine load is calculated. Most Mopar fuel- injection systems have used Speed Density too. First, all I wanted was to convert the computer of my 1988 F150 5. 0, E4OD; "For this article, I will be doing a 93 Ford F-150, 5. The MAF sensor is located MAF vs Speed Density Post by jacob_royer » Fri Mar 04, 2005 9:11 am I am wondering from a performance stand point what is the diffrence on stock engines between speed density and MAF on horsepower and tourqe? also are the MAF engines more efficent? The 87 fox body came with speed density. mass air If this is your first visit, be sure to check out the FAQ by clicking the link above. Jacques Gordon has worked in the automotive industry for 40 years as a service technician, lab technician, trainer and technical writer. Speed Density (MAP) reguarded as superior to the factory ford speed density 1988 was the first year some of the mustangs from california had MAF, Whether you do Maf, or SD your car will make the same power. Imagine what motors running speed density tuning without a MAF can gain! The Ultimate Air Lid For Speed Density Tuners For those of you that have moved to a speed density tune (SD) and removed the MAF sensor, this is the perfect air lid for you! Speed density vs MAF load measurement How to configure and use a data logger After completing this course you will have the knowledge and skills to confidently begin tuning cars with a commercial or open source reflashing package. There is a unit called the MAF Translator Pro. We can get just about the same driveability as a MAF car, but we can use this method for nearly unlimited HP. Curious, is there a reason why Speed Density is preferred over MAF outside of not having a meter to deal with? My guess is that there are two schools of thought on MAF vs. I have an old PRO-M 75mm Bullet meter with the Sample tube style sensor. My question is "what do you benifit from speed density, vs. And the tune was different no doubt, going from the speed density system to MAF. It should be MAF, anyway, right behind your airbox, if there is a metal cylinder type piece with a small black electrical box on top of it, you have a MAF. does a 2001 ford focus have a maf It certainly seems that way. The ecu is speed density based (map sensor). The tuner gave me a free upgrade to speed density because I had done an engine rebuild. 96 was the year of change. My question is MAF vs. I bought a 3in GM maf and translator and had planned on running DSMLINK, but now im reading about ostrich and hearing about speed density and figured they were one in the same. I have had a MAF and a speed density tune on my lt1 (in my 68 camaro). which is SD i was planning on getting a bigger tb and the cobra upper and lower intake also. 11-18 Fuel injection depends on actual mass air flow. 0 V8 BBK Cold Air Intake and Ram Air Intake on to a 1986-1988 5. the speed density system (manifold absolute pressure) used in TPI cars and SY/TY's, and trucks. Speed density runs on engine vacuum and anything you do to lower vacuum will cause problems. 0, E4OD trans. COBB Tuning continues to break new ground in the Nissan GT-R R35 tuning world with the latest round of updates for the AccessPORT. You could also use a 1988-92 Mark VII computer (DX3, DY3, VL2, D9S) although you will be speed limited to 105mph with most of them. Out of interest, does anyone think that it would be possible to add an adaptor with two sensor ports between the inlet manifold and the throttle body to allow the MAP and/or temp sensor to be inlet side of the throttle body on the VII and VIIIs without fitting a IX manifold? GT-40 heads on Speed Density 5. A MAF is only really accurate in steady state or slowly changing conditions. Our implementation of Speed Density adds our proprietary tuning logic to the factory ECU, enabling it to calculate load, ignition and fueling requirements using the engine’s manifold absolute pressure (MAP) sensor, instead of the factory mass airflow (MAF) sensor. In lay man's terms, this means two things: That the PCM uses MAP sensor signal info and RPM input (from the PIP sensor) to calculate the approximate amount of air the engine in your pickup (car, van, or SUV) is breathing. whats the difference? what would be the upside of having maf instead of speed density. The car runs fine at wot, targeted and delivered lambda are almost the same (~0. SD calculates the air to fuel ratio by an estimate of the amount of air entering the engine, whereas mass-air directly measures the amount of air entering the engine with a mass-airflow (MAF) sensor. Mass air flow is much more accurate that the old speed density system. System used was a Linkplus G3. Re: Tuning w/MAF vs Speed Density I was trying to keep my car MAF but I kept blowing them apart so I just went ahead and changed it over to Speed Density. Converting from Speed Density to Mass Air flow is not recommended unless cam and cylinder head changes have made idle quality and / or driveablility unacceptable. twinturbostang. 78). MAF vs Speed Density. Worked great on my red 850. " Speed density vs maf Hi everyone, I just had my engine rebuilt and just got my car back and tuned. Pro's and Con's I don't know except for the MAF being a sort of restriction in the intake channel although that issue is mainly based on scaling of the type of MAF used because the ~2. The cam is the culprit. My question is for any of you who have converted your MAF to a speed density system. All ’86-’87 and ’88 non-California Ford 5. Speed Density Vs. The fuel system in your Ford vehicle is a ‘Speed Density’ type. Maf has 1. on paper, the MAF setup will outperform speed density just because its more accurate readings for the computer to use, however there are plenty of badass speed density cars so its not like you cant get performance with SD Speed Density THE Speed Density (SD) feature changes the way the engine load is calculated. ihave a 87 5. 0, but not for the 4. a Speed Density System in all style mustangs. I can't find the MAF sensor on my 96 Ford E350. This item: BBK 1558 Speed Density Mass Air Adapter Kit for Ford Mustang 5. I work at a ford dealer and mentioned the option of Speed Density so some of the techs and they all said don't do it as all they have seen in ford was problems and since Ford switched to a Speed Density THE Speed Density (SD) feature changes the way the engine load is calculated. MAF. Re: Speed density: Using MAF output instead of MAP sensor ou by techsalvager » Sun Apr 15, 2012 3:25 pm it will looks somewhat like maf usage on a ms1 and be just as annoying to tune as a speed density setup. Speed Density VS MAF If this is your first visit, be sure to check out the FAQ by clicking the link above. Is the bk2 2. Speed density vehicle. on first glance it seems that its true speed density however ford uses MAF in order to find actual MAF and uses speed density calculations to find the corresponding MAP, it also has upper limit for mass air flow defined by finding the roots of the quadratic equation. This is a discussion on MAF vs Speed Density within the Computer & Tuning forums, part of the LSx Technical Help Section category; What is the advantage of a speed density tune over a MAF? OK, TR's use a Mass Air flow system vs. Just going through my '87 5. Uses internal MAP sensor – can be used on both cars with factory MAF or speed density Mounts in the stock location – case is specifically designed to use factory mounting points Fully Tunable Engine Control! Speed Density vs MAF If this is your first visit, be sure to check out the FAQ by clicking the link above. V8s use MAF tuning, and are covered in another guide available at Ford > Engine > Airflow > General Airflow. Speed Density to Mass Air Conversion & Parts List with Cost in a 93 F150, 5. 1L / 4L80E / 4X4 in a 2001 Silverado. 0L with a speed density EFI, will the GT40 heads make a difference in performance? And second, can i use the stock F150 intake with the GT40 heads? Map vs Maf tuning. speed density vs maf ford