MAF screen restriction
Thread Starter
Safety Car
Joined: Sep 2004
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MAF screen restriction
I weighed the pros and cons of descreening my MAF and decided to do it instead of buying one without a screen. My tuner said it would not be an issue to correct the tables. I had always wondered how much the screen made a difference since the computer programming varied between a C5 MAF and a Z06 MAF. I'm sure someone at one point has tried this but I haven't seen it on here yet. After I took the screen out I started collapsing the screen on itself but never folded it. When I got done I had a near solid piece that measured roughly 10 square centimeters. Sorry if this has already been done and I'm just 
Le Mans Master
Joined: Nov 2003
Posts: 8,004
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From: Tampa Fl
St. Jude Donor '12-'13-'14
Ive done both. Screened and unscreened.
My car didnt have as much bucking crawling at low RPM as it did with the screened verision.
Though pick up seemed a little better off the line with the unscreened verision.
My car didnt have as much bucking crawling at low RPM as it did with the screened verision.
Though pick up seemed a little better off the line with the unscreened verision.
Last edited by phils C5 vette; Nov 3, 2007 at 01:40 PM.
Original Founding Member!
Joined: Jul 1999
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From: Granby, MA
Cruise-In 1, 3, 9. 10 & 11 Veteran
ok...help me out....but
wouldn't taking the screens out, allow you to very easily pass junk through and possibly allow it to cling onto those very little wires? Wouldn't this cause a miscalculation by the maf? or even damage the wires?
Race Director
Joined: Sep 2004
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From: Redsox, Pats, Celts & Bruins !!! Redsox Nation !!!
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
As far as the screen itself, it has many functions, but the main reason is it straightens out the air so you get an accurate reading from the sensor. It does not cause a big restriction. The aftermarket sensors that claim 10-30 HP have already been proven wrong over the long haul. With out a computer program the MAF will adapt to the computer settings.
Just get a dyno tune and leave the two hundred dollar sensor alone.
A descreen works just as good as the coolant bypass, IMHO.
If you think you screen has some surface area, look at the inside of your cats.
