Advice Needed on Next Mod from Experienced Owners

JLarson

Your best gains are from cold air intakes, test pipes, and catback. After that you follow a path of diminishing returns - ported manifold and headers will net you something, but it's relatively costly for limited performance improvement.

I did Z1 Intakes with velocity stack upgrades, 63 mm ported throttle bodies, z1 ported upper mani, fast intentions long tube headers, fast intentions exhaust, dynoed at 334 whp, 278 wtq (and my torque band starts early thanks to the headers).

https://docs.google.com/spreadsheets...it?usp=sharing

I keep a lot of dyno data and results in a shared Google Drive file, you may enjoy looking over it.

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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)