LS2 backfire
Thread Starter
Racer
Joined: Jun 2003
Posts: 404
Likes: 1
From: Brentwood TN
LS2 backfire
I have stock crate 2006 LS2 in my 67 Corvette and experiencing backfire through exhaust and some forum members indicated to check for vacuum leak.
I check my MAP sensor reading and it showing 10.2 in at idle. Is this low as I seen some info that it should be around 20 in?
Thanks
I check my MAP sensor reading and it showing 10.2 in at idle. Is this low as I seen some info that it should be around 20 in?
Thanks
Thread Starter
Racer
Joined: Jun 2003
Posts: 404
Likes: 1
From: Brentwood TN
Thanks for the response and that seems to be the issue. I was told to check for vacuum leaks or exhaust leaks.
On vacuum side, I'm using the vacuum port on the rear of the engine for my PB and the only other place I know(still learning about LS) was checking MAP. Wasn't sure of operating range of MAP is or what should vacuum reading be for LS2?
The exhaust is stock manifolds using dual exhast and I don't have leaks there. I understand on C6 that using H or X pipe has helped backfire issues but I'm running straight exhaust.
On vacuum side, I'm using the vacuum port on the rear of the engine for my PB and the only other place I know(still learning about LS) was checking MAP. Wasn't sure of operating range of MAP is or what should vacuum reading be for LS2?
The exhaust is stock manifolds using dual exhast and I don't have leaks there. I understand on C6 that using H or X pipe has helped backfire issues but I'm running straight exhaust.
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
When does it backfire? On decel? If so, this can be tuned out. Either greatly reduced or completely eliminated. I can do that for you through mail order for a small fee. Send me an email if you're interested. Email addy in sig.
Thread Starter
Racer
Joined: Jun 2003
Posts: 404
Likes: 1
From: Brentwood TN
decel
Thanks for the help
