Since I'm not going to read through a 120pgs of stuff, has anyone installed these with a set of high flow cats behind them? And has anyone dynoed their car with a supercharger and these headers other than Shumby at the very beginning?
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2008 Infiniti G37s 6mt coupe
Berk HFC, Magnaflow Catback, JWT Popchargers, H&R, Eibach, Stillen Sways, B&M short throw, 4.08 frontier gears, NST pulleys
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