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"he said it could possibly be the after market exhaust system creating some noise with the aluminum" This one is so funny that it actually tops my91z(whatever whore) post today. John doesn't know what he is saying. And now he try to blame the exhaust? I think someone here in this forum(you know who you are) need to clear something up about sticking up with John @ powertrain about being an expert in D/shaft. Anyway GODzxLLA, the vibration is because the 1pc alum d/shaft is much more less stiffer than the 2pc and the steel one. Thus the vib problem. Did powertrain refund your money and maybe labor charge too?
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