M.a.f.
Safety Car
Joined: Dec 2004
Posts: 3,565
Likes: 5
From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Originally Posted by tony 63 vette
what are the pros and cons of removing the screen ????
Le Mans Master
Joined: Feb 1999
Posts: 7,121
Likes: 0
From: Vilano Beach FL
Howdy!
AFAIK, The screens are supposed to reduce turbulence so that the airflow can be metered better. I know there were some folks who removed them in older C5's and got inconsistent readings from the MAF when using a scantool.
Though in later C5's - like my Z (I *think*), the screen was removed, but I'm sure there was some complimenting MAF/electronic changes as well. Personally, I'd leave it alone
AFAIK, The screens are supposed to reduce turbulence so that the airflow can be metered better. I know there were some folks who removed them in older C5's and got inconsistent readings from the MAF when using a scantool.
Though in later C5's - like my Z (I *think*), the screen was removed, but I'm sure there was some complimenting MAF/electronic changes as well. Personally, I'd leave it alone
Melting Slicks
Joined: Jun 2006
Posts: 2,208
Likes: 1
Originally Posted by DT
Howdy!
AFAIK, The screens are supposed to reduce turbulence so that the airflow can be metered better. I know there were some folks who removed them in older C5's and got inconsistent readings from the MAF when using a scantool.
Though in later C5's - like my Z (I *think*), the screen was removed, but I'm sure there was some complimenting MAF/electronic changes as well. Personally, I'd leave it alone
AFAIK, The screens are supposed to reduce turbulence so that the airflow can be metered better. I know there were some folks who removed them in older C5's and got inconsistent readings from the MAF when using a scantool.
Though in later C5's - like my Z (I *think*), the screen was removed, but I'm sure there was some complimenting MAF/electronic changes as well. Personally, I'd leave it alone
Lot of discussion on the f-body forums, and a lot of thrown engine codes and lessened performance. Also, many who claim a 5hp improvement, sop, etc. Personally for me too, I have never taken it off. Chevy didn't put them on to decrease performance but to balance it. 
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Originally Posted by DT
Howdy!
AFAIK, The screens are supposed to reduce turbulence so that the airflow can be metered better. I know there were some folks who removed them in older C5's and got inconsistent readings from the MAF when using a scantool.
Though in later C5's - like my Z (I *think*), the screen was removed, but I'm sure there was some complimenting MAF/electronic changes as well. Personally, I'd leave it alone
AFAIK, The screens are supposed to reduce turbulence so that the airflow can be metered better. I know there were some folks who removed them in older C5's and got inconsistent readings from the MAF when using a scantool.
Though in later C5's - like my Z (I *think*), the screen was removed, but I'm sure there was some complimenting MAF/electronic changes as well. Personally, I'd leave it alone
There arent inconsistent readings either. If you run the new Lingenfelter MAF or remove the screen on this car, you get additional airflow and that is a plus. The removal of the screen requires you to adjust/tune the MAF table as you do in a VE tune. Once that is done, the car runs perfectly. Getting rid of the MAF altogether gets you 20rwhp but requires the car to run in speed density all the time. No turbulance issues in that case either. Combilned with all the other mods that are labeled "worthless" (ported TB, UD pulley, ported intake manifold, EWP) you can pick up 20-30rwhp.
I removed it on my C5 and the scans were not inconsistent. They were didfferent since the amount of airflow reported was increased....since it increases airflow. You input the C5 Z06 table and you had a perfect smooth running car as I have.
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Le Mans Master
Joined: Feb 1999
Posts: 7,121
Likes: 0
From: Vilano Beach FL
Ahh good info that clears that up! I knew my C5Z did not have MAF screens, so I was curious as to how different things could really be, other than the particulars of the tune.
(I think there was also some overlapping issues with various intake systems, that muddled the info regarding the MAF itself).
Definitely sounds like you need a tune vs. just yanking it out, but isn't that the case with just about everything?
SD tunes always sound like great setups (heard some amazing idle quality on big cams), though I had a SD setup on my Supra, and it had to be tweaked as other "external" factors changed.
Again, great input!
DT
(I think there was also some overlapping issues with various intake systems, that muddled the info regarding the MAF itself).
Definitely sounds like you need a tune vs. just yanking it out, but isn't that the case with just about everything?
SD tunes always sound like great setups (heard some amazing idle quality on big cams), though I had a SD setup on my Supra, and it had to be tweaked as other "external" factors changed.
Again, great input!
DT