I am running the invidia gemini on my Z with stock cats and it is not loud at all. If your not giving it gas, you can't hear any exhaust noise (highway cuising has zero drone). When you get on it, it does liven up but not to a degree that I am worried about cops pulling me over. I actually finally got some videos taken and hope to have them posted tonight or tomorrow.
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2009 370z 6MT Touring w/ Sport Pkg | Invidia Gemini CBE| Stillen G3 CAI | ERZ HFC's |X-Pel Clear Bra | 20% Tint
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