thanks a lot guys...my friend tracks with his 350Z that has straight pipe & Greddy Exhaust and has no problem. I don't know how that compares to the Stillen. I thought Stillen was one of the quieter ones already. But of course I think the Nismo one is a little quieter as it's still OEM factory stuff.
My friend also suggests to build a 90° elbow pipe which can point away from the sound station. HAHA, i might look into that.
I thought the stock one runs around 84 dB.
I contacted Stillen and they replied that it conforms with CA sound laws & any exhaust will be louder than 90 dB with a High Flow Cats.
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