Z1 header on dyno 370z - YouTube
stock 370z makes 207whp and 170qtq
Baseline without tune made 224whp and 190qtq
after tune: 245whp and 203wtq
i have made 235whp with greddy tic and berk hfc and k&n short ram intake... but that was close to October or November when its colder.
i will post dyno print out later