I just checked today using a small dB tester, and my cabin is about 82-84 dB @ 80 mph, just over 3k rpms, with LTH and CBE.
I know people have asked that question in the past. Please note I do have sound deadening in my trunk, which definitely has an impact.
I'll do some more tests including going through the rev range, but I'll need a passenger to hold the tester and record results.
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2014 370z Touring Sport Magma Red MT // BP Single Turbo 6467 // 63mm TB's // Z1 Ported Upper Mani // RJM Pedal // Zspeed Stage 3 Clutch // 526 WHP, 451 WTQ
2006 350z (Sold) // 1990 300zx (Sold) // 1985 300zx 2+2 (Sold)
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