I'm not big into LS1's but I remember seeing a service bulletin for knock sensors. I'll look around and see if I can find it.
02-06-04-023A is the bulletin I was thinking about. Not sure if that will help at all since he's already replaced the sensor and the harness. I'd fix the exhaust first before you tear the intake back off.
Last edited by Stevoone; 02-09-2011 at 12:46 PM.
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