Quote:
Originally posted by DDMan
That was the Gen 1-3. I have the Gen 4's which dont have that brace so they wont crack.
I havnt had a problem, with them including no CEL's, but there was a slight hissing whenever I was on the gas. Does this seem to be the culprit?
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gen 4's crack too, trust me, im on my third set.
like i said, you can try to drill out the holes so the bolts can push more flat against the flange. you might not have tightened them enough, there may have been debri on the flange, or if it happened a little after you started using them, they may have cracked, look for a hairline crack at the welds on the collector nearest the flange where the cat bolts to.