You'd be lucky to see much change in 0-60 period due to traction/launch being the biggest issue with the Z in a drag race. Maybe .2-.3 in the 1/4 mile as a whole, depending on how good the tune is. The intake/exhaust combo is only good for about 20whp over stock anyway. A tune might give you another 5-10 with a virtually stock car.
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77 280z, 82 280zx, 84 300zx, 2021 C8 Z51
09 370z sport/touring -RIP// 10 370z NISMO - sold
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