MAF screen removal
Thread Starter
Racer
Joined: Sep 2001
Posts: 314
Likes: 0
From: Forest Hill MD
MAF screen removal
Can someone let me know whats involved/process in removing the MAF screens, and the approximate increase in airflow? Can the screens be re-installed?
Thanks-Jim :flag
Thanks-Jim :flag
Burning Brakes
Joined: Jan 2001
Posts: 964
Likes: 0
From: Cedar Park Texas
Re: MAF screen removal (jims_red_94LT1)
Easy to remove the screen; on my 96 there was a metal clip in a groove; so remove the clip and them I gently tapped on mine from the backside and it came right out. Be careful not to damage the element. I have done this procedure on three vettes; never any problems.
Burning Brakes
Joined: Nov 2000
Posts: 855
Likes: 0
Re: MAF screen removal (dt35th)
If your careful then the screens can be glued back on. The screens are glued to a circular disk, which in turn is glued to the MAF, if you pop off the disk the screens will be unharmed.
Team Owner
Joined: Apr 2001
Posts: 22,267
Likes: 3
From: Dallas TX
Re: MAF screen removal (Rick86)
I pulled the screens on mine pretty easily. I didn't cut them out.. just poked them out from the other side, so I can still put mine back in, just have to be careful when doing so. I don't intend to put them back in though. I've heard there is as much as a 100cfm increase in air flow. That makes the TB the most restricting part of the intake system I believe.
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Team Owner
Joined: Sep 2001
Posts: 62,122
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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Re: MAF screen removal (jims_red_94LT1)
well i know there are screens on both sides of the element in mine
Drifting
Joined: Jan 2002
Posts: 1,606
Likes: 1
From: Las Cruces NM
Re: MAF screen removal (vader86)
I don't know if you want to bother with this one. I ran a consistant 14.0 in my stock 97 Trans Am, LT1 auto. At the strip one day I figured I would remove the screens to see if I could get that elusive 13 second quarter mile run. I didn't notice any difference and my track times and mph were identical. I have heard of people getting poorer drivability because the screens help smooth the airflow through the maf. I have never seen anyone gain anything at the track by removing the screens.
If there's no gain and there might be a downside, it might not be worth doing.
If there's no gain and there might be a downside, it might not be worth doing.
Race Director
Joined: Aug 2000
Posts: 11,506
Likes: 4
From: Vancouver,Wa.
Re: MAF screen removal (okinawa86vette)
Here are the numbers you are looking for
529 CFM - max. flow rate stock
711 CFM - max. flow rate with screens removed
750 CFM - max. flow rate with screens and cooling fins removed
529 CFM - max. flow rate stock
711 CFM - max. flow rate with screens removed
750 CFM - max. flow rate with screens and cooling fins removed
Melting Slicks
Joined: Apr 2000
Posts: 3,198
Likes: 2
From: Northern CA
Re: MAF screen removal (jims_red_94LT1)
thanks, I guess they are only on one side of the element? if I'm understanding you correctly.
On the LT1 MAF, you can replace the screen/clip as easily as you can remove it...no cutting involved.
[Modified by JasonL, 6:08 PM 1/15/2002]
Team Owner
Joined: Apr 2001
Posts: 22,267
Likes: 3
From: Dallas TX
Re: MAF screen removal (BAdAzZV8)
Since the screens don't exist in LS1 engines.. i figure GM figured out they aren't needed. And ANYTHING in the intake that takes up space that air could be flowing through is a restriction.
Instructor
Joined: Sep 2001
Posts: 130
Likes: 0
Re: MAF screen removal (Glock'94)
I talked with a buddy that worked at a speed shop and has loads of chassis dyno time. He did specific tests to see if removing the screens would help, and at least on the later LT1/4 cars, he saw absolutly no increase on the dyno. This included stock and slightly modded cars, like cut airlids, K&N, TB bypass....
On the earlier cars, the screens are different and do seem to benefit from removing the screens.
Personally, I have left the screens in for now to reduce the chance of damage to the element, but hey, whatever works for you.
Jeff
On the earlier cars, the screens are different and do seem to benefit from removing the screens.
Personally, I have left the screens in for now to reduce the chance of damage to the element, but hey, whatever works for you.
Jeff
Team Owner
Joined: Apr 2001
Posts: 22,267
Likes: 3
From: Dallas TX
Re: MAF screen removal (powerslide91)
I talked with a buddy that worked at a speed shop and has loads of chassis dyno time. He did specific tests to see if removing the screens would help, and at least on the later LT1/4 cars, he saw absolutly no increase on the dyno. This included stock and slightly modded cars, like cut airlids, K&N, TB bypass....
On the earlier cars, the screens are different and do seem to benefit from removing the screens.
Personally, I have left the screens in for now to reduce the chance of damage to the element, but hey, whatever works for you.
Jeff
On the earlier cars, the screens are different and do seem to benefit from removing the screens.
Personally, I have left the screens in for now to reduce the chance of damage to the element, but hey, whatever works for you.
Jeff
Instructor
Joined: Sep 2001
Posts: 130
Likes: 0
Re: MAF screen removal (Glock'94)
Not too sure, since my car is still a ways from that point. I think like some others have pointed out, it doesn't hurt to try it.
Just FYI, he also recommended against going to a larger TB unless you are dealing with a 383+ motor, but even then it is not always needed....
Jeff
Just FYI, he also recommended against going to a larger TB unless you are dealing with a 383+ motor, but even then it is not always needed....
Jeff
Burning Brakes
Joined: Feb 2001
Posts: 841
Likes: 0
From: Wichita, Ks, USA
Re: MAF screen removal (powerslide91)
In visiting with a neighbor who is in the local club and gutted his MAF he said that the guest speaker who is a C4 expert said thet the screens arent necessary and the computer system can make up for anything that could change.