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Message: <blockquote data-quote="Gavin" data-source="post: 26444" data-attributes="member: 13902"><p>Haha yeah I had a severe misfire after putting the motor back in after the cam swap. I had one of the coil harness’s flipped 180 degrees so that definitely could’ve done it. I never actually drove it when it was misfiring like that but it was backfiring like crazy. I’m not sure if it’s going into closed loop but the fuel trims look good. I also checked the temp of the bank 1 cat and compared it to bank 2 and the both look similar. Both outlets were significantly hotter than the inlets. Also both of the post cat o2 sensors voltage are fluctuating like they should around 700MV so it seems like the cat is working as it should</p></blockquote><p></p>