MAF screen keep it or toss it?
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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Re: MAF screen keep it or toss it? (yellavette94)
toss it, remove both screens, shouldnt cause you to ever have to buy another one
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: MAF screen keep it or toss it? (yellavette94)
Gutting the MAF reduces restriction to air flow. If nearly stock it's likely not worth it.
I've been running a gutted MAF in my IROC LB9 for over 4yrs and in my Vette L98 for nearly 2yrs with no problems.
If you decide to do the operation check out my site for some precautions and a method.
I've been running a gutted MAF in my IROC LB9 for over 4yrs and in my Vette L98 for nearly 2yrs with no problems.
If you decide to do the operation check out my site for some precautions and a method.
Drifting
Joined: Jan 2002
Posts: 1,606
Likes: 1
From: Las Cruces NM
Re: MAF screen keep it or toss it? (65Z01)
The flow difference on the newer, LT1 MAF's without the screen is very slight. You won't pick up any power. The newer ones were redisigned to flow better than the old L98 ones and don't benifit from the screen removal. I would leave it on, and you won't have to worry about having your $250 MAF ruined by a piece of debris or a slip of the tool you use to remove the screen.
As far as the L98 MAF's go, the screen removal makes them flow something like 15 or 20 percent better, according to some of the flow tests I've seen.
Chris
As far as the L98 MAF's go, the screen removal makes them flow something like 15 or 20 percent better, according to some of the flow tests I've seen.
Chris
Racer
Joined: Jun 2000
Posts: 469
Likes: 0
From: Norfolk VA
Re: MAF screen keep it or toss it? (okinawa86vette)
Leave the screens! I removed mine some years ago, but after getting into the tuning aspect of the vette I have read many studies WRT the screens Vs. flow I wish I had not. The screens are there to straiten the air over the filaments to give a more accurate idea on air intake. They do not impede the air intake. Several people on the tuning list I am on have found that a stock non-ported MAF with screens will flow over 1000cfm of air. Leave the screens.
Later,
RJ
Later,
RJ
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Melting Slicks
Joined: Oct 2000
Posts: 2,726
Likes: 24
From: Freehold, NJ
Re: MAF screen keep it or toss it? (yellavette94)
Toss it!
I got rid of mine years ago with no ill effects.
Even GM has tossed the MAF screen from the '02 Z06.
It may be necessary for L98 cars, but I don't think it's necessary for an LT1/4.
I got rid of mine years ago with no ill effects.
Even GM has tossed the MAF screen from the '02 Z06.
It may be necessary for L98 cars, but I don't think it's necessary for an LT1/4.
Drifting
Joined: Jan 2002
Posts: 1,606
Likes: 1
From: Las Cruces NM
Re: MAF screen keep it or toss it? (Eric Fischer)
Actually, its the opposite. The L98 style MAF's seem to work much better without the screens, while the newer, LT1 MAF's are meant to use the screen (only one in the newer ones) to straighten the flow. The newer ones are of a bigger bore, and flow much better than the older units.
BTW, at the track, I removed the screen on my 97 LT1 Trans Am and promptly picked up no time. While I have had no ill effects, if there's no gain, what's the point of wasting the time and possibly damaging the MAF?
BTW, at the track, I removed the screen on my 97 LT1 Trans Am and promptly picked up no time. While I have had no ill effects, if there's no gain, what's the point of wasting the time and possibly damaging the MAF?
Le Mans Master
Joined: Oct 1999
Posts: 9,713
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From: Sachse Texas
Cruise-In I Veteran
Cruise-In II Veteran
Re: MAF screen keep it or toss it? (okinawa86vette)
Leave the screens in the MAF. They are not hindering me any that I can tell and I am still using a stock MAF with the screens. I saw one person at the Dyno remove their screens and they lost 5 horsepower on the run thereafter. Now, if that means the computer needed drive time to adjust, or if the screens helped, you decide. I did.
