Misfires are typically electrical or timing related. Re-check the electrical connections that were disconnected/re-connected. Are you sure that nothing else electrical was disconnected or knocked loose (like a wire from the flywheel sensor or cam position sensor or something similar to that)?
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1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
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