Lein, regarding your questions on sound volume, a little more on this. Last night I swapped the 12" resonated mid pipe in, replacing the unresonated. Even with headers, the volume decrease was dramatic. Just further feedback noting you should be fine with 18"s.
I'm going to miss the unresonated version just a little bit. There was something epic about that shockwave of sound slamming into me when I started the car at 6 am... something wonderful in the way the neighbors shook their pitchforks and torches at me as I cruised by, rattling their windows with the low droning roar of my engine, unrestrained by god or conscience...
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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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