Runs like crap with MAF connected

[johnsjmc]

Originally Posted by Deadeye

It's the same MAF that was working fine before the airbox change (996.606.124.00) I used the tube section (for the maf) that came with the cayman airbox and did some custom plumbing from there to the throttle body.

It looks like you used the larger diameter maf housing from the 987 airbox. The 987 maf housing is larger than the one on a 986. Use the smaller housing or you will need a custom tune to use the larger maf. Some have tried pushing a 996 3.4 tune with mixed results.