Trouble codes with airbox
Thread Starter
Race Director
Joined: Sep 1999
Posts: 12,438
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From: CONCORD NC
Trouble codes with airbox
Well, I finally got Autotap running, and did some logging with my car. With my DIY airbox, my ltrms are withing +2 to +4% across the board, so there is no reason for any trouble codes on my car. After all of the posts I've read, I'm nearly convinced that people aren't getting good seals, and air is leaking in between the MAF and the intake, causing a lean condition.
I'm doing headers/cat back soon, and I'll monitor that as well. I'm not making any tuning changes until after I've done all my mods, just logging for the sake of knowledge.
I'm doing headers/cat back soon, and I'll monitor that as well. I'm not making any tuning changes until after I've done all my mods, just logging for the sake of knowledge.
Drifting
Joined: Sep 2005
Posts: 1,775
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From: Rehoboth Beach Delaware
Originally Posted by davidfarmer
Well, I finally got Autotap running, and did some logging with my car. With my DIY airbox, my ltrms are withing +2 to +4% across the board, so there is no reason for any trouble codes on my car. After all of the posts I've read, I'm nearly convinced that people aren't getting good seals, and air is leaking in between the MAF and the intake, causing a lean condition.
Installed a SLP Blackwing, quick install, uses stock mounting for the air bridge, didn't touch the MAF to intake connection, and no codes !!!!
Team Owner
Joined: May 2001
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From: ...tearing up the highways, one state at a time™®©
Originally Posted by davidfarmer
Well, I finally got Autotap running, and did some logging with my car. With my DIY airbox, my ltrms are withing +2 to +4% across the board, so there is no reason for any trouble codes on my car. After all of the posts I've read, I'm nearly convinced that people aren't getting good seals, and air is leaking in between the MAF and the intake, causing a lean condition.
I'm doing headers/cat back soon, and I'll monitor that as well. I'm not making any tuning changes until after I've done all my mods, just logging for the sake of knowledge.
I'm doing headers/cat back soon, and I'll monitor that as well. I'm not making any tuning changes until after I've done all my mods, just logging for the sake of knowledge.
I saw the Engineers there once totally seal off the inlet and then test it to prove (to themselves) that their design would not leak
FWIW, even the stock unit (when sealed off at the inlet) had an air leak(s) between the two ends
I forget the % it leaked, but clearly, it was enough to take notice 
I hope this helps
Thread Starter
Race Director
Joined: Sep 1999
Posts: 12,438
Likes: 919
From: CONCORD NC
interesting... The stock coupler (MAF to intake manifold) has plenty of overlap and nice clamps, but anything can be installed improperly.
A leak upstream of the MAF wouldn't cause a problem. Glad to know some of us haven't had problems, as it seems a lot of folks have.
A leak upstream of the MAF wouldn't cause a problem. Glad to know some of us haven't had problems, as it seems a lot of folks have.
