headers for 2002c4s
#1
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what are the headers of choice for 2002 c4s? or are the stock exhaust manifolds ok with improved mufflers? do replacement headers need an o2 sensor bung...if so what happens if new headers dont have bung? whats the scoop on the asian headers out there? on the intake side , are the new plenums worth the investment, and finally what is the chip of choice...my 1st h20 porsche and so far i love this thing ...after 4 air cooled cars. thanks in advance for your expert advice, kevin