so your piping took out the main resonator right? i retained my stock resonator but have 2.75" piping from the main cat (or what used to b the main cat) to the resonator then from the resonator to the muffler and a dp replacing all the cats from the manifods to the cat back; it is LOUD allready... do you have headers too? if you have no resonator and no cats, you must really have a loud exhaust now! ur car probabaly sounds like a v8 ski boat now.
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