Quote:
Originally Posted by Zeto
Daishi, it's not the X-pipe. Before I got my Ark exhaust I had the Berk TPs alone with a stock exhuast and STILL had the hissing sound. Like DannyGT said, its the resonance.
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according to m4a1 if you have an exhaust without a crossover you dont get the hissing.. Its hard to pinpoint the sound exactly. On my car it sounds like it comes directly from the xpipe.