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-   Porsche 924/944/968 Technical Forum (http://forums.pelicanparts.com/forumdisplay.php?f=10)
-   -   maf in a 944? (http://forums.pelicanparts.com/showthread.php?t=268659)

Eldorado 02-26-2006 06:56 PM

maf in a 944?
 
md951 over in classifieds is sellin a maf for an '86 951...

could this be put into my 83?? what's involved with adding a maf to an early car?

fast924S 02-26-2006 07:41 PM

If its for the 951 prolly not. But you can do a MAF on a 944. There has been some that have done DIU MAf kits, and there are some MAF kits that you can but. I bought one a while back.


http://forums.pelicanparts.com/uploa...1141011655.jpg


I know the cone intake inst great, My engine is out now getting some other mods done and on the list is redoing the intake system.

Techno Duck 02-26-2006 08:19 PM

fast924S, have you ever dynoed your car?

fast924S 02-26-2006 08:22 PM

Nope not yet, There isnt many speed shops around here, Once I get her back together Im gonna go in search of a good dyno shop

PhillysMostWntd 02-26-2006 09:35 PM

fast924s - could you tell me some more info on DIY maf kits?? ive always wanted to toy with this but didnt know where to start, just want to see what i can play around with until FR releases his HFM5.

fast924S 02-26-2006 09:47 PM

Do A search on the Turbo forum, If Im correct there is a huge topic of converting a FORD MAF to work

Eldorado 02-26-2006 09:50 PM

Quote:

.....on the list is redoing the intake system.
what are you going to change?

fast924S 02-26-2006 09:52 PM

remove the cone filter and make a true CAI

CJFusco 02-27-2006 06:54 AM

Here is a kit for the 944NA: http://www.promax.uku.co.uk/maf_kit.htm

FRWilk is supposedly developing one as well.

cchyper 02-27-2006 12:53 PM

I know that FRWILK is trying to make one happen. BUT GOOD LUCK GETTING A HOLD OF HIM!!! i have emailed him 3 times in the last 4 weeks, and not one reply. I swear that guy just roams the planet, comes home after a couple months of vacation and then fills some orders for chips, then he goes and does it all over again. Still no idea when the FRWILK MAF kit will be done. Hopefully soon.

924Sman 02-27-2006 04:43 PM

I have read some good reports on the Promax MAF. The HFMS is a Bosch Hot film AF meter that was developed a few years ago. This is actually called the replacement for the "barndoor" AF but was introduced long after Porsche made the last 968. So the data was never introduced into the "new style" meter leaving this unit in need for an external unit with the data that pertains to the 944 for it to work. But do work on many late model Fords etc as the data was available for Bosch to make the units as a replacement for those cars.

This company just happen to beat FR to the punch but at a a cost. He was thinking around 650.00 Promax is around 850.00 shipped from Europe.....iirc

Dal

IanS 02-27-2006 09:51 PM

Given that the MAF is only about $100, I think $850 is quite high. Hopefully that'll come down over time.

PhillysMostWntd 02-28-2006 09:31 AM

Quote:

Originally posted by IanS
Given that the MAF is only about $100, I think $850 is quite high. Hopefully that'll come down over time.
im patiently waiting for FR to release his, $600 can be justified in my mind.

x3m944 02-28-2006 10:21 AM

Our Turn Key/Plug and Play MAF conversion, includes:
MAF CONTROLLER
MAFTUNER SOFTWARE
WIRE HARNESS
80 MM RECALIBRATED MAF - PUSH OR PULL CONFIGURATION - can be used on NA or for BOOST - AS IN CONVERSIONS.

Comes loaded with the 944 file.
Works out of the box, just install.
PRICE: 525.00 Introductory

Compare to Lindsey Racing Perfect Power setup + MAF.

For Details ASK.

pokey 02-28-2006 11:18 AM

I wasn't going to mention that you were working on one yet, X3M. You got it together faster than I thought. Sweet.

x3m944 02-28-2006 11:36 AM

Yep yep -

You can get the package or get everything but the MAF, and use your own MAF - but then you have to tune everything via a laptop or the controls on the box to tweak to the 944 setup.

The best bet is the whole package - complete all new direct from the factory, loaded with 944 or 944 turbo file.

Ready to go out of the box, full manufacturers warranty, etc...

My own stuff is a little different, but this setup the one I posted... ROCKS. It is what I am using on my car and in my kits.

It can work with about any car - In other words - you can convert a toyota or a mitsubishi to a use a gm or a ford maf - different functions - but their are two kits each provides the signal you need and lets you full tweak it, like if you run larger injectors.

Porsche requires a voltage signal other cars require a frequency... we got you covered! Hahahaha

I might do a post all about it later.

CJFusco 02-28-2006 06:47 PM

Hmmm. What kind of power gains could we expect going from a stock setup to, say, a FRWilk chip and this MAF setup that X3M is selling?

PhillysMostWntd 02-28-2006 08:21 PM

more info x3m944, sounds interesting..

x3m944 02-28-2006 08:45 PM

LONG POST
 
http://img.photobucket.com/albums/v637/x3m944/t.jpghttp://img.photobucket.com/albums/v6...ro-m-tuner.jpghttp://img.photobucket.com/albums/v6...aftunerkit.jpg

Laptop, or standalone, programmable Digital Mass Air Flow Meter controller with MAF!

The MAFTuner functions by intercepting--and modifying--the electronic signal between your car's Mass Airflow meter (MAF - supplied) and computer.

On cars not originally equipped with a MAF – this allows you to be rid of the restrictive factory arrangement, or on cars with smaller factory setups, you can go to a larger size. With the appropriate file loaded the computer receives the signal it needs. You can tweak for those custom applications, etc.

Remember that a mass air meter's one and only job is to tell the processor as accurately as possible how much air is being ingested at any given time, so that in the case of the 944 the DME can then order the appropriate amount of fuel injected for proper combustion.

Maintaining an ideal ratio between air and fuel--an ideal that varies somewhat depending on a number of factors--is oh-so vital for exhaust cleanliness, idle quality, driveability, power production, and ultimately the engine's survival. An A/F ratio that is at any time either too rich or too lean can adversely affect any or all of these conditions.

In Most applications, the mass air meter talks to the ECU by sending it a signal that increases in voltage with the mass of incoming air. More air equals more voltage (within a range of roughly 0-5 volts DC). This can be reversed, so that voltage decreases as air flow increases.

In the ECU's software cerebrum, any given voltage input is equated to a certain mass of air, to which the program assigns a corresponding amount of fuel to be injected. In other words, the amount of fuel injected is directly related to the voltage received by the ECU from the mass air. Raise that voltage and the computer would call for more gas, and vice versa. When reversed the same occurs. So air flow = voltage signal = more or less gas.

The MAFTuner does its trickery by intercepting the mass air meter voltage signal and selectively raising or lowering it, according to the user's preference, before sending the modified voltage on to the ECU. This makes the computer believe that either more or less air is being ingested than is actually the case, fooling it into generating a slightly leaner or richer A/F mixture. The voltage changes applied by the user need not be universal; they can vary from point to point in the airflow curve. In other words, you can leave the mixture as is at some points, richen it in some areas, and lean it in others, depending on what your engine's combination responds to best.

These voltage alterations can be ordered up either by using the combination of four potentiometers and eight LEDs arrayed on the face of the MAFTuner, or by attaching a laptop. Since it's best to have a clear A/F ratio feedback, detailed tuning will be best done on a dyno equipped with a wideband oxygen sensor that can show the ratio real-time.

The MAFTuner can also save you from needing to have your meter recalibrated after changing injector sizes or adding a cold-air kit. For instance, let's say you have a 80mm Bullet mass air calibrated for stock injectors and you then upgrade to a set of 40-lb/hr squirters. Rather than removing and shipping your meter back to the manufacturer for recalibration, you can simply hook up your MAFTuner to your laptop with the supplied cable, and use the included software to reprogram it using specific voltage alteration tables. Their by maintaining peak fuel curves.

This little setup adds real-time A/F tuning to your bag of tricks. Will the mere act of bolting on the MAFTuner instantly gain you horsepower?

Nope, it's a tuning tool, not a power adder. By nature of its function and tweaking, as well as less restrictive nature, you stand to possibly gain more power.

It's a flexible way to gain complete control over all-important air/fuel mixtures, and getting those right can maximize power, driveability, and efficiency, making the MAFTuner a valuable addition to tuning your setup.

We include a 80mm Pro-M MAF that has been digitally recalibrated to make a Complete package.

Just remove the AFM install the new setup and tune!

The Controller comes with the 944 NA or TURBO File Preloaded. All you have to do is tweak and tune or drive.

x3m944 02-28-2006 08:54 PM

Need more fuel at the high end or less? Just tweak the voltage and the fuel. Need to compensate for higher than stock boost and nurse out more fuel...

This product allows you to calibrate and adjust your MAF output, to not just match the old AFM, but to tweak it.

You can change the voltage output of your Mass Air Meter to match different engines and injectors.

You can compensate with thirty-two point manipulation of your transfer function to find your optimal curve. That is More points than most stand alone MAP type fuel systems and about thirty more points then other systems on the market.

This fuel controller can be adjusted by hand or programmed with any laptop or PC.

Allow you to optimize your fuel curve for any modifications and conditions. Or just be rid of the restrictive outdated AFM.

So in other words can you say - perfect for adjusting fuel under a na coverted to boost conditions? Or just maximizing things as is.

IAT (Intake Air Temperature) sensor is included to improve it's fuel control of the engine.

No DME/KLR software change necessary.

This kit will work to control most any Mass Air Meter whether Hot Wire of Vane Air Meter type that works on a analog 0-5 volt signal.

The MAF can be set up in a blow thru or draw thru, we include everything! Turn key, we can configure the system for just about any car analog or digital air meter signals are not an issue.


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