I dunno but F.I. exhaust with 12" res is pretty quiet to me until around 3k RPM... I'm not sure where people are getting that the F.I. is even that loud. Maybe with no resonators or on cold start but I'm sure HKS would be similar.
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SOLD 12/30/2011 2010 370Z Coupe Monterey Blue 6MT/Touring/Sport/Nav
F.I. CBE CF w/ 12" Res | V1 | SecondSkin | Stillen G3 | EVO-R CF B-Pillars | Volk GT-S Ti Gunmetal 19x9.5 +30 F, 19x10.5 +8 R | Swift Spec-R Springs
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