Quote:
Originally Posted by mzavada
A bit of background on the car: The engine was rebuilt about 40K miles ago, and the Cat was removed prior to my purchase.
I'd love to hear advice on what I need to start looking for/testing to determine the cause.
Thanks, I'm looking forward to many many miles of smiles with my new Porsche!
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To begin with, you'll need to find out what else was removed or disabled in the engine. Seems whoever rebuilt the engine may have done more than just a rebuild. Look for things like disconnected or plugged vacuum lines and hoses etc.