Does that MAF mod really work?
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Re: Does that MAF mod really work? (LayZ)
Taking the screens out? TPIS will work yours up for a small charge but is it really worth doing? Will it improve anything?
In my 88, it would appear that the screens are important in helping ECM to adjust fuel. they work, I believe, in conjunction with TPS.
I have read about people gutting the screens, but have seen no real evidence that it is an improvement. Maybe some SOTP's comments, but no real evidence. IMHO!
I have tried most of the "free Mods" and the only one I can truly say made a real significant difference was removing the "frisbee" on my L98. I am also quilty of SOTP on this, but I do know Iam a little quicker out of the corners as engine revs up a little quicker.
Cutting lids, throttle bypass, really didn't add anything for me, again SOTP!
:cheers: Let the Flames begin :D :D
Jack :steering: [I love that Lil Guy]
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From: NJ
Re: Does that MAF mod really work? (jackdaroofer)
86, auto, 3:07 gears. I did the cut lid and K&N and it really made a diffrence. I didn't think the L98 had the frisbee problem i thought it was 91's and up.
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Re: Does that MAF mod really work? (LayZ)
Frisbee is on l98's, maybe 88 and up. Mine is an 88
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Re: Does that MAF mod really work? (LayZ)
86, auto, 3:07 gears. I did the cut lid and K&N and it really made a diffrence. I didn't think the L98 had the frisbee problem i thought it was 91's and up.
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Re: Does that MAF mod really work? (vader86)
Ok why not the fins just curious, Could i use a dremel to cut the screens out and do i need to make them smooth or is there a section on this in the tech tips?
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From: Guyton GA
Re: Does that MAF mod really work? (LayZ)
Removing the screens gains a substantial amount of CFM's (L98 only). Removing the fins too is not worth the effort on a lightly modded engine. Besides the fins have a function.
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Re: Does that MAF mod really work? (castivers)
On my ‘88 that mod work.
First I done screens remove and second cut that fins.
After first I saw improvement, after second (fins) not.
In my opinion that free mods (cut air lid, KN filter, TB bypass and MAF screens remov.) works and I really feel that work on my car.
Jerry, Poland
First I done screens remove and second cut that fins.
After first I saw improvement, after second (fins) not.
In my opinion that free mods (cut air lid, KN filter, TB bypass and MAF screens remov.) works and I really feel that work on my car.
Jerry, Poland
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From: Phoenix AZ
Re: Does that MAF mod really work? (merrick)
:iagree:
You can remove the screens with a utility knife. If you live in a warm climate, I wouldn't mess with the fins. they are there to help dissipate heat from the MAF. According to TPIS, GM had some MAF failures during hot weather testing and added the fins.
[Modified by vetracer, 5:36 PM 1/8/2003]
You can remove the screens with a utility knife. If you live in a warm climate, I wouldn't mess with the fins. they are there to help dissipate heat from the MAF. According to TPIS, GM had some MAF failures during hot weather testing and added the fins.
[Modified by vetracer, 5:36 PM 1/8/2003]
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Re: Does that MAF mod really work? (vetracer)
OK glad i picked up a second MAF from a 88 just in case. Now is there a trick to this or can i just cut the screens out completly? do i have to be careful of something or cut away?
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Re: Does that MAF mod really work? (LayZ)
Ok why not the fins just curious, Could i use a dremel to cut the screens out and do i need to make them smooth or is there a section on this in the tech tips?
You can cut out the screens with a knife or whatever.
Drifting
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From: Houston TX
Re: Does that MAF mod really work? (CORKVETTE1)
As far as the fins go, someone hit the nail on the head...the fins are the heatsink for the powersupply for the MAF. If the power supply overheats, or even changes temperature significantly, it will screw up your MAF signal to the computer.
The screens do allow more air to pass through, but here's the trick....you're allowing more air to pass through, but at the same velocity as the original airflow...what this means is that the engine thinks you're getting less air than you really are. This is a bad thing. I did it before I knew what I was doing, and lost power on the dyno. This is because the engine was now running what it thought to be the correct A/F ratio, when it was really too lean. If I were you, I'd leave it alone.
The screens do allow more air to pass through, but here's the trick....you're allowing more air to pass through, but at the same velocity as the original airflow...what this means is that the engine thinks you're getting less air than you really are. This is a bad thing. I did it before I knew what I was doing, and lost power on the dyno. This is because the engine was now running what it thought to be the correct A/F ratio, when it was really too lean. If I were you, I'd leave it alone.
