Numbers seem pretty good for the mods. If you really wanted to gain further, you could get velocity stacks, ported upper and lower manifolds, and consider a single exit exhaust. Keep in mind the $ per horsepower at this point starts to get pricey, and other than the velocity stacks, the other items I've mentioned here will gain you more at the top end of the power band.
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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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