Quote:
Originally Posted by Jordo!
Probably a vacuum leak somewhere along the bank with the higher trims.
Check again -- any crack anywhere before or just after the primary O2 can and will cause this problem.
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Apparently now the difference in fuel trim can bounce from one side to the other, so I think it has to be some kind of computer gremlin/glitch. They smoke tested the intake and exhaust and only found a small pinhole leak along the welds at the stock exhaust manifold where it mates to the TPs which shouldn't be enough to cause this....