You comparing a 390whp Stillen kit that did not deliver the 418whp power level when it was running 8/9psi versus a GTM kit that made the same 390whp on 6psi.
The reason 8psi was not delivered on some kits was due to the LTH's and VVEL tuning not the SC kit itself.
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08 G35 5AT Sedan | Stillen CBE | Invidia HFC | Injen CAI | Uprev Tune | Akebono BBK | Tanabe Coilovers | Hotchkis Sway Bars | GTSpec FSB | Black Headlights & Grille | Volk GT-F Wheels | Hankook V12 Evo Tires
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