Ok so I've read through the whole thread, but I have a question on all this (during these note that I live in NJ who is pretty heavy on the emissions testing)
If a person were to go with test pipes instead of HFC's could they just clear the CEL and prevent it from coming back on with a program such as UpREV by having it de-activate the second O2 sensor (to prevent any problems when getting inspected)?
I'm trying to figure out why everyone here (who almost everyone wants max performance N/A for now) are going with HFC's instead of test pipes.
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