Porsche 944 DIY Tune for INSTANT Horsepower! (Bosch MAF Tune)
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- Опубликовано: 29 сен 2024
- Quick how-to video on tuning a Porsche 944 Mass Air Flow sensor (also known as the Air Flow Meter). This Bosch system is occasionally found in other cars from the 80's, especially Volkswagens and BMWs. It can be easily tuned to adjust the air to fuel ratio in just a few seconds, for better efficiency and power output.
🔺Disclaimer: I am not a professional mechanic, and actually have no idea what I'm doing.
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You are a very bright and articulate kid! And please take no offense in the word “kid”.....I’m 65, retired military and retired law enforcement.....proud owner since 2006 of a 90 944s2 cab. Your willingness....and yes, some courage....to work on your car - to experiment - is very impressive! And should encourage other 944 owners to do the same. You have the tenacity, and intelligence, that used to impress me of my young Navy Sailors and young Federal Officers--which frankly, goes far in decreasing my concern for “tomorrow”. I firmly believe that you will do very well “in life”! This video was both entertaining AND educational. Bravo-Zulu, young man.....well played! Very well played!
Thank you so much! I really appreciate all the kind words 😄
You my man, are the good kind of old person, you are the kind of person that makes me happy you have money to keep cool cars
What a very informative and educational video! I'm slowly working on my 944S and this video is very helpful for sure. Subscribing.
take those crosses off the headlights you new kids are so cringe bro
Doesn’t actually make it run richer it just lessens attention on the spring so it’s more responsive or less responsive. If you make it less enough, it could get leaner.
The only real problem here is you keep referring to this system as a MAF, when it simply isn't.
A MAF measures air flow with a heated element which passing air will cool. The 'barn door' on the afm is literally pushed open by air entering the intake. As you might guess, an AFM is inherently restrictive, which is why one of the great upgrades you can get for a 944 is a MAF conversion.
I'm not sure what the real problem is, I've only ever heard the system referred to as the MAF sensor/ AFM. And I did mention that the door is opened by air entering the intake, right at 1:26.
I'll probably throw the whole system out and upgrade when (if?) I add forced induction.
@@QuickshiftCars Air flow Meter- AFM, as on the 944, 944S, 944S2, 944 Turbo and 924S vs Mass Air Flow- MAF, as on the 968 are two different air metering technologies. If you are seeing people refer to the stock AFM on 944's as a MAF it's misinformation that is inherent to the internet. If they are used to much newer cars then they are confusing it with the the MAF or MAP sensor found on those.
For interests sake, 2.0L 924's and early 928's had MFI- Mechanical Fuel Injection which is the dumb version of an AFM.
j1nx3d5 This is irrelevant. He gave good advice and filmed this thoroughly and well. Forgive him for improperly calling it a MAF instead of an AFM initially. He knows what he’s doing at least! You should look at the other clowns that posted on AFM adjustments, it’s a joke!
It's actually very relevant. These cars are 30+ years old and he states he's only ever heard them called MAF sensor/AFM. He is perpetuating bad info which is already everywhere on the internet. Where does spreading bad info stop? They are giving car maintenance advice on a public medium. At best, it will cause someone a few mins confusion looking for a 'maf sensor' for their '83 944. At worst, the advice these kids give could cost someone an engine.
@@j1nx3d5 don’t get all excited because you know something and think someone could actually blow a motor because they call it a MAF. Even if you accidentally search MAF for your 944 you will find the correct AFM part. If it makes you so unhappy I suggest doing the work of setting up a RUclips channel, filming, editing and building a following. Or maybe just easier typing on keyboard and sounding smart.
Don’t mess with that, you change the mixture air/gasoline, you ended up blowing your engine. It’s simple, DO NOT DO IT
You sold the car.
This is the video that everyone should be watching if they need to adjust their AFM. My 944 was running rich, so I leaned it out turning it the other direction. Throttle response, idle and the over all smell of the emissions cleaned right up! Your video was thorough and brilliant. There’s some other jokers that did videos on this. I am glad I found yours!
I'm glad I could help!
ahh throttle response saw that cam where cable connects there is a aftermarket for that from automation can put on there that helps increase response
Young man, you impress the hell out of me! You are most definitely wise beyond your years! I own a 1990 944S2 Cabriolet….I bought it as a gift to me when I turned 50 the same year I was promoted to O6 (Captain) in the Navy. As I live in New England, she is stored for five months out of the year. I’m at that stage in my life that I have neither the patience, tools or a spacious garage in which to work….and I have an income that permits me paying to have my maintenance performed by a vintage Porsche mechanic that restores old cars. Still, there was a time that I did my own work….and your video will help many owners of these cars….keep these cars on the road! So Bravo-Zulu….we’ll done. Oh! By the way….I think those 944s pre-1985….have the coolest looking gauges clusters! I don’t know what your intentions in life are…..and obviously I don’t know you from Adam….but I think you have a great future ahead of you….and frankly, I’m proud of you. I wish you only the best….and a couple times, you made me laugh, while teaching me something! Best of luck, to you and in all that you do!
Wow... that is a lot simpler than I thought it would be...
I think the previous owner of my 944 tried doing this and went over board.. does anyone know how to get it back to the oem settings?
I bought a chip from Race Pro's that basically did this perfectly without messing with the MAF sensor. Then upgraded my gas to plus and now she's a small beast!
Can you post a link and what year and trim your car is? Will be buying a 84 944 n/a tomorrow and wanna know if I cam do this time as well
You could also replace the Porsche emblem on the nose with a sticker(Porsche, preferably). In addition to the obvious weight and aero benefits it will give added status points. Just like a GT3 RS!
I bet a VW sticker would be way cheaper, and almost as good!
50 hp guaranteed
First! Give me a cookie I deserve it.
You win! 🍪🍪🍪🍪
🍪🍪🍪🍪🍪. I will share with you both
@@jackofalltrades8933 i steal them all
It's very interesting. I will try this on my 944 soon and share my result. Thx for video Porsche-bro.
What was your result?
did you try it out?
I think it really works! Engine is working smoothly and acceleration is little better. On the occasion I cleaned throttle and setup low rounds. Another modification and great satisfaction when working with it. Thx a lot :)
Glad to hear it!
Low rounds? How do you mean?
should be noted that this should only be adjusted simultaneously with the DME o n a dyno with lambda .
Could I use this same technique in reveres if my cars running a bit rich ?
Yes, opposite makes it leaner
Do not even think about doing this unless you have a wideband O2 gauge, you can play about with where the wiper sits on the track at rest and the tension to very slightly alter the enrichment curve but like I said, without an O2 gauge you have no idea whether the end result is better, FYI, decreasing spring tension runs richer, slightly more at low rpm's, to run richer at high rpm's tighten spring but advance arm, saying all this, there is a factory adjustment which can be done externally, the procedure is covered ion the workshop manual
THIS ^ If you've tried everything else and have absolutely no vacuum leaks or excess blow by due to ring wear, AND a wideband o2 gauge, AND you have checked your fuel systems pressure and function, this is your next step.
At least note on the inside of the cover the change in position! I'll be sorting out my 1988 2.5 NA with all kinds of tweaks. At this point I know I need a wideband before I even look into this kind of stuff!
Agreed!
The best mod to put power to the ground is smaller rims
Awesome useful and very well done. Thank you
Where did that shift knob and boot come from? Is that mentioned in any of your other videos?
Where did you purchase the round throttle pulley to replace the extended arm version ?
How exactly did you get it to rotate counter clockwise??
How to 😵💫🤢🤬 a porsche ...
I don't know about this.
I had one time bmw 2.0 v6 bosch afm on 944 for fun. Now days i have it deleted and have moved to use VEMS and wasted spark.
What was wrong with the BMW afm???
I have the same dealer two tone car
Beats!
When looking at the sprocket from above, are you advancing it one tooth clockwise or counter clockwise?
He said counter clockwise
1 tooth?
Is it different with a new modle like a 86
I know the design was changed in a few models like the S2 and Turbo, but it should be the same for an '86.
DO NOT DO THIS MOD!!!
This is a really bad idea and no doubt part of why you killed the car. You're definitely not a mechanic and have proven you have no clue what you're doing. Thank god you eventually sold the car and are no longer giving idiotic advice to 944 owners. I repeat DO NOT DO THIS MOD if you have a 944 unless you want to kill it too
Yeah, that's good advice, but why is it bad?
@@geoffstandee because it will stuff up the AFM reading to DME and replacement AFM are not available from Porsche, do you either need to spend a fortune on refurbed unit, that has limited life before it has problems or go stand alone ecu, neither of which are cheap.
@@kewlhunter7333 what you mean when you say stuff up?
@@MasParaQue the AFM has a very precise calibration so the DME gets an accurate signal. If you modify it, that precision calibration is permanently damaged. These AFM are no longer available from Porsche so only options are a used one(probably with same issue) or changing to a stand alone ECU. Both options are very expensive.
@@kewlhunter7333 got it!
An options for an upgrade