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Author Topic: Read this before you mess with your MAF  (Read 42331 times)

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WILDFIRE

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Re: Read this before you mess with your MAF
« Reply #25 on: 05/31/07 02:40 AM »

What's the MAF?  :dunno:
Mass Air Flow sensor
« Last Edit: 05/31/07 09:24 AM by WILDFIRE »
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kavesman1

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Re: Read this before you mess with your MAF
« Reply #26 on: 05/31/07 05:14 AM »

well,my GTA Trans Am had the MAF system installed from the factory back in 1989.MAF is more forgiving on bolt on equipment(intake,headers,exhaust,etc.) due to the fact that it can compensate for increases in the airflow of a motor is taking in.but to a certain point,it will become a restriction to the air intake potential for the motor.

I took of the MAF of the TA and switched to the MAP system(manifold absolute pressure) like what came on the 1990-1992 Z-28 camaros and Firebirds.

The MAP system reads directly off of the intake manifold,but is more tricky to tune.the sensor will go crazy with alot of bolt on equipment that alters the pressure in the manifold.But the MAP system,went finally tuned right,will give you more HP than the MAF,Because there is no restriction in the intake flow.

Also,at least in the 1990-92 MAP systems,the BLM(Block Learn Mode)program,if you can get the BLM at the same level across the entire rpm range,you will have a perfectly tuned engine.

I had to take out the MAF,Due to the fact i was installing twin turbos on the TA.Every seen what happens to a MAF sensor when you have 30lbs of boost go through it.Not a pretty picture.
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kavesman1

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Re: Read this before you mess with your MAF
« Reply #27 on: 05/31/07 05:24 AM »

But the cool thing about the 1990-92 MAP system,it can be adapted to other vehicles.There's a company i got all my info from. www.customefis.com
He has a GM EFI system that can fit almost onto anything that was equiped with a carb,or another system.
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crlbrn1

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Re: Read this before you mess with your MAF
« Reply #28 on: 12/20/07 01:58 AM »

Thank you for the information. . .
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one92rs

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Re: Read this before you mess with your MAF
« Reply #29 on: 02/15/09 06:59 AM »

wow. i have seen this argument debated so many times that it could make a person crosseyed. i have taken them out and left them in. i have logged (2002 silvy 5.3) both ways. with the screen it was smooth transition on all the readings. with out the screen power came in waves as turbulent air moved accross the wires. and one other argument is that gm put one in a vette without a screen from the factory. hense they tuned a little for it also. so i say on a slightly modded vehicle wioth the screen removed-you might feel some here and there and think it is great. but there will be times it will not feel the same. of course it all depends on temp and atmosphere.  in the long run i believe that it is best to leave it in there. it has been argued to peoples content. i have seen a maf with the screen in it supply a twin turbo truck with enough readings to run to a certain point. i still see mafs with screens supply supercharged trucks with all they need to run great. and as said before. the maf will outflow the intake,throttle body,and cold air intake on your truck. then comes in custom tuning. it can be helped to flow even more. i had the screen in on my older truck-2002 silvy-5.3-heads-226/228/581/588/114 cam-long tubes-no cats-built tranny-electric fans-cold air intake-175 shot of nos. and even maxxed running perfect i still never outflowed the stock maf. so on a stocker with bolt ons. leave it alone. it will flow better with the screen that straightens the air that passes thru it to be able to read the temps correctly and smoothly and help more that one without a screen that allows turbulents and spotty perf gains
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Loggie

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Re: Read this before you mess with your MAF
« Reply #30 on: 02/15/09 07:09 AM »

good post one92rs
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Emu the Foo

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Re: Read this before you mess with your MAF
« Reply #31 on: 03/25/09 10:25 PM »

wow. this really helped. thanks man
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BrokenFeather78

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Re: Read this before you mess with your MAF
« Reply #32 on: 10/28/10 06:20 PM »

kavesman1 points out MAP tuning (also known as speed density tuning) a must for forced induction. If you're naturally aspirated the stock truck maf in its stock form is all you will ever need. F-body and vette guys have been pulling truck mafs from junkyards for years. A testament to their ability to handle power.
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Double-O

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Re: Read this before you mess with your MAF
« Reply #33 on: 07/19/11 06:40 AM »

Very informative.
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Shagy

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Re: Read this before you mess with your MAF
« Reply #34 on: 08/28/11 01:57 PM »

That's a good write up. Goes for other mfg's as well....
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STAGGEREDM3

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Re: Read this before you mess with your MAF
« Reply #35 on: 05/27/12 08:29 PM »

Ladies and Gents!!!!!!!   This is why I Love Forums. Thanks for the great and informational read.  :B:
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tlrche67

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Re: Read this before you mess with your MAF
« Reply #36 on: 08/24/12 01:12 PM »

Does it make a difference where on the intake the mass air flow sensor is located?
 On my  07 avalanche it's located near the filter what if it was located closer to the throttle body?
 I do not want to remove the mass air flow sensor just move it... will it harm anything or is it possible?
 I'm no mechanic just have a suggestion for producing a custom intake, which would involve moving the mass air flow sensor
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Av-n-Taz

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Re: Read this before you mess with your MAF
« Reply #37 on: 08/25/12 07:02 AM »

Based on the fact that the sensors inside for the MAF and the IAT sensor are all temperature sensitive,
I don't think you'd want it too close to the engine, or directly behind the radiator (huge heat source).

Just my .02.

HTH,
EJ
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enoniam

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Re: Read this before you mess with your MAF
« Reply #38 on: 02/21/13 01:14 PM »

I've descreened my MAF - even relocated the sensors in it, as well as relocated the MAF itself.

Descreening it didn't hurt it, but didn't do much for performance to a fairly stock engine.

I will say this though, restrictons do add up.  For each restriction you are loosing a little bit of air pressure.  Just because the screen isn't the biggest restriction in the intake tract doesn't mean it isn't costing a bit of airflow and hence potential power output.  Whether the potential amount to be gained is justified by the risk to damaging the MAF is another question .....
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Jwh91

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Re: Read this before you mess with your MAF
« Reply #39 on: 04/03/18 07:57 PM »

So where can I buy a 52mm throttle body for the 05? Would I see more power and mpg by doing this and the maf screen?
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