MAF screen removal - more lean?
Thread Starter
Melting Slicks
Joined: May 1999
Posts: 2,365
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From: Vancouver BC
MAF screen removal - more lean?
From what I understand, early C5s were running a little rich (correct?). Would removing the MAF screen make it a little leaner (more air), or would it go the other way (more fuel, since the sensors detect more air)? I've tried to search for the answer, but I couldn't find a definite answer.
Thanks, Indy
Thanks, Indy
Tech Contributor
Joined: Jan 2007
Posts: 19,461
Likes: 1,166
From: Dyer, IN
From what I understand, early C5s were running a little rich (correct?). Would removing the MAF screen make it a little leaner (more air), or would it go the other way (more fuel, since the sensors detect more air)? I've tried to search for the answer, but I couldn't find a definite answer.
Thanks, Indy
Thanks, Indy
Thread Starter
Melting Slicks
Joined: May 1999
Posts: 2,365
Likes: 0
From: Vancouver BC
Surprising. If anything, you should find plenty of posts recommending to leave the MAF alone....
PS: I guess the idle relearn procedure (http://www.c5forum.com/diy/idlerelearn.php) would also help after this mod, right?
Race Director
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
Z06s without screens throw lean codes if some aftermarket air filter systems are installed. If you want to ingest more air, keep the screen and swap out the stock air box for a good aftermarket CAI system. You will gain 10+ RWHP.
Tech Contributor
Joined: Jan 2007
Posts: 19,461
Likes: 1,166
From: Dyer, IN
Tech Contributor
Joined: Dec 1999
Posts: 32,910
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
The C5 MAF is "CALIBRATED" with or with out a screen. If yours was calibrated with a screen and you remove the screen, you are going to effect part throttle fuel economy and performance most likely in a NEGATIVE direction. When your in WOT (the area where the screen would be a minor restriction) the MAF isn't controlling your PE tables. There being controlled by a table. The MAF is out of the loop.
You use your MAF for probably 90% of your driving. So, removing the screen for 10% of your driving time and adding maybe 3-5 HP really isn't worth the hustle.
If you are going to have the PCM tuned after adding MODs, removing the screen would be able to be compensated for through tuning.
BC
You use your MAF for probably 90% of your driving. So, removing the screen for 10% of your driving time and adding maybe 3-5 HP really isn't worth the hustle.
If you are going to have the PCM tuned after adding MODs, removing the screen would be able to be compensated for through tuning.
BC
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Tech Contributor
Joined: Jan 2007
Posts: 19,461
Likes: 1,166
From: Dyer, IN
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Your a nut!
Is that you in the video??? 
BC
Mikethat was so funny