The oem nismo exhaust is slightly louder and definitely deeper than the non nismo exhaust. From the cabin, you might not realize the differences from the 2. But from the outside, you could clearly hear the differences. The nismo exhaust sounds like an aftermarket exhaust.
Having said that, the nismo exhaust is nowhere close to the Fast Intentions exhaust. FI is much louder and deeper.
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09 PW 370z Nismo | K&N Drop Ins | HKS Hi Power | Berk HFCs | Work Meister S1 3P | Project Kics R40 Neo Chrome Lug Nuts | KW V1 | SPC rear camber arms/toe bolts | Southbend Stage 3 daily clutch | Southband 19Ib Steel Flywheel | ZSpeed CSC
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