M.A.F SCREENS

[ChrisK]

IS IT BEST TO REMOVE BOTH OR JUST ONE???
I AM HEARING 2 DIFFERENT STORIES.

THANKS..

 

[tta89]

Try it and see. Some like 1 some like none. I run 1.

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Mike Schoenfeld
1989 Turbo Trans-Am
11.95@113 Pump Gas
11.42@119 Race Gas

 

[jerryk]

I removed both my screens with no adverse
effect. The car seemed to be a bit more responsive under partial throttle. Didn't get to the track to do a before vs. after time comparison. Makes sense to me to have no inlet restrictions to air flow.

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Jerry Kircher
89 TTA # 1158 T-tops/Leather
12.2 ET @ 113 MPH
96 Viper GTS 6 speed
12.0 ET @ 121 MPH
Best MPH 112.5

 

[DaveGershon]

Can the screesn be re inserted in to the MAF? On a factory original unit?

Thanks,
Dave

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TTA #90 Festival Car
1989 GTA L98
1979 10th T/A (SD455 eng)
1974 SD 455 T/A

 

[2QUIK6]

Usually unless your chip has been programmed for it, you have to leave 1 screen in. The screen acts like a guide to guide the air thru the venturi correctly for an acurate reading. Usually a rough idle condition will happen if you remove both without programming the chip for it. But there have been case where both have been removed with no side effects.
You can put them back in, they are just sandwiched together with a locking ring on the outside to hold them in.
I have 1 screen removed in my GN, but both are still in the TTA.

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Rob
Rob's HIGH PERFORMANCE & PARTY page!
'89 TTA #426 bone stock
'87 Grand National 2nd owner 10 yrs.
40# inj,JL chip,HW Walbro 307,KB SS headers,THDP,V-4 IC, stock turbo & TC, SS dual exhaust, no cat.,Direct Scan, BFG 275/50/15 DRs on stock rims. Under 50K miles.
'95 Trans Am Convertible stock
'94 Silverado Tuned Port Injected

 

[HouseofSpeed]

The screen "smooths" the air as it moves across the grid in the sensor. That screen is the least of your worries when it comes to inlet air restrictions.

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Kyle Kent
House of Speed
"Make power..not excuses"

 

[DaveGershon]

What would be the hp gain with the removal of the screens with an ATR air inlet system, a K&N air filter and a performance chip?

I know on the 89 350 Tuned Port cars its about 5hp when the plenum is cleaned up and a K&N air filter is used. But a L98 TPI engine does not move the air these buick engines do and it is slightly smaller.

Dave

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TTA #90 Festival Car
1989 GTA L98
1979 10th T/A (SD455 eng)
1974 SD 455 T/A

 

[CanadianTTA]

So if I removed both of the MAF screens, would that be causing a surging idle on my TTA? I don't know what you guy's HP gains were, but I notice the throttle response imroved enough to notice a gain. I think I gained around 8 to 12 horsepower, but if you can feel a noticeable different, than it should be at least an 8 to 10 hp gain!



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Rebuilt 89 TTA
DJ