here are my dyno results with z1 shorty headers and HFC
291whp and 234wtq baseline
307whp and 237wtq after header install
310whp and 243wtq tuned
https://www.myg37.com/forums/engine-...ml#post3958002
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Tuned by (Seb@Specialty-Z)
2011 G37 Cam'd FBO 347whp 280wtq Corn Fed 4.08 Gears
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