Cutting screen in MAF??

Stang_Crazy · 03-22-2001, 04:09 PM

I heard somewhere that if you remove the screen in the MAF that you will improve airflow and MAY gain some horsepower. Any truth to this?

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91 GT AOD: 3.73's, Pulleys,PI Converter, 14.71@91.78mph
(before pulleys)

gray87GT · 03-22-2001, 05:38 PM

I personaly have never heard of that, but it may improve air flow very slightly. I do know that the Vortech MAF doesn't have it.

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87 GT, BBK shorty's, offroad H-pipe, ASP pullies, 70mm T.B., Cobra intake, no smog pump, Windsor Jr irons, Comp cams 1.6 rollers, F303 cam, H.D. export W.P., Tri-Ax, FMS subframes, Battle boxes, SSM liftbars, FMS King Cobra clutch, mass-air conversion, 73mm C&L, 24lb injectors, BBK fuel pressure regulator, 3/8" no EGR spacer, and other piddly sh*t.

Capri306 · 03-23-2001, 08:26 AM

I'd be really afraid of turbulence getting into the MAF sensor and causing all sorts of miscalculations in your a/f ratio. Thr screen is supposed to smooth out the air flowing through the MAF body so that an accurate measurement of the weight of the air entering the engine can be obtained, or so I've been told. Even having the radiator fan blowing air across the filter element is bad (those of us with open conical K&N's know this). I'd leave the screen alone and look to make horsepower somewhere else, preferrably with an intake, heads, and exhaust. A bigger TB and MAF meter wouldn't hurt, either. Hope this helps.

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Capri306, Moderator, The Mustang Works Online
1979 Mercury Capri, 5.0L -- C4 -- 2.73
1987 Mustang LX Notch

03-22-2001, 04:09 PM	#1 (permalink)
Stang_Crazy It's never clean enough! Join Date: Jan 1999 Location: Shaler, PA Posts: 1,542	Cutting screen in MAF?? I heard somewhere that if you remove the screen in the MAF that you will improve airflow and MAY gain some horsepower. Any truth to this? ------------------ 91 GT AOD: 3.73's, Pulleys,PI Converter, 14.71@91.78mph (before pulleys)

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03-22-2001, 05:38 PM	#2 (permalink)
gray87GT Registered Member Join Date: Jan 2001 Location: Minnesota Posts: 177	I personaly have never heard of that, but it may improve air flow very slightly. I do know that the Vortech MAF doesn't have it. ------------------ 87 GT, BBK shorty's, offroad H-pipe, ASP pullies, 70mm T.B., Cobra intake, no smog pump, Windsor Jr irons, Comp cams 1.6 rollers, F303 cam, H.D. export W.P., Tri-Ax, FMS subframes, Battle boxes, SSM liftbars, FMS King Cobra clutch, mass-air conversion, 73mm C&L, 24lb injectors, BBK fuel pressure regulator, 3/8" no EGR spacer, and other piddly sh*t.

03-23-2001, 08:26 AM	#3 (permalink)
Capri306 Moderator Join Date: Sep 1998 Location: Grand Rapids, Michigan, USA Posts: 1,001	I'd be really afraid of turbulence getting into the MAF sensor and causing all sorts of miscalculations in your a/f ratio. Thr screen is supposed to smooth out the air flowing through the MAF body so that an accurate measurement of the weight of the air entering the engine can be obtained, or so I've been told. Even having the radiator fan blowing air across the filter element is bad (those of us with open conical K&N's know this). I'd leave the screen alone and look to make horsepower somewhere else, preferrably with an intake, heads, and exhaust. A bigger TB and MAF meter wouldn't hurt, either. Hope this helps. ------------------ Capri306, Moderator, The Mustang Works Online 1979 Mercury Capri, 5.0L -- C4 -- 2.73 1987 Mustang LX Notch

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