Originally Posted by danisfake
I thought post turbo leaks (exhaust leaks) were not detrimental to the car and pre turbo leaks would cause maf issues which are bad for the car since metered air is not correctly being measured.
I'm talking about a boost leak between the compressor outlet and the throttle body. If you have a bad enough boost leak the car won't run at all under any real load. Pre turbo (compressor housing) will cause MAF (lean) issues.
A pre turbo exhaust leak will just keep you from hitting target boost, and make your car smell like exhaust.