nbesheer Posted July 24, 2007 Share Posted July 24, 2007 Okay so what I want is a 2.5" exhaust I've decided on these headers at MSA http://www.thezstore.com/page/TZS/PROD/PEC02/15-6017 it says there is a 2.5" adapter available will that be good for performance going from a smaller diameter to a larger one ? I kinda figured it would make no difference since that smaller part is going to be choking it. Does anyone know what the regular size of the header is. Anyways my plan is these headers with a 2.5" pipe to a car sound Cat to a magnaflow strait though muffler.Does that sound like a good combination. it still kinda has to pass smog so I need that cat in there. Quote Link to comment Share on other sites More sharing options...
WHP Posted July 24, 2007 Share Posted July 24, 2007 MY MSA headers matched up so poorly to my exhaust ports I trashed them and ported a P79 manifold and hooked it up to an oversize twin downtube. Heavy, but cheap, no leaks, and pulls good to 8K. Quote Link to comment Share on other sites More sharing options...
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