Hooker longtubes on LS6 Crate Engine HELP!!!
and yes I need this on because last time I had it off the trans banged when it shifted.
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I'm also getting a service light on...I had my pcm tuned when I had the engine put in last year by pcmforless for no cats..I thought they tuned out the rear o2's...I called pcmforless and he said it's probably because it's running lean from the longtubes..I'm going to take a drive up to autozone and see what a scanner says.






