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knocking after tune

1856 Views 47 Replies 14 Participants Last post by  Grabber523
has anyone encountered this problem? after i installed my kb tune i needed to change back to stock, and after reinstalling the kb tune back in i have a severe misfire / knock. after this i sent the sct back to kenne bell, they said everything was fine with the tune and even sent me a new sct. the car still sounds like a jackhammer but will not display a code. any ideas?
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Sounds like the timing is way off. I would keep after them for more help.
Did you try disconnecting the battery for 15 minutes, and then starting from scratch again? I haven't done this myself, so I don't know if it holds any truth, but I've seen other guys saying that doing so resets things in the PCM.

It's worth a shot for what it takes to disco the battery for 15 minutes.
Best of luck with her dumps. Bring that baby back and let's see some pictures of the finished product. :)
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