Not so many people here has dropped 3-4k on an exhaust. So there is not much data can prove on the numbers. But Amuse is a premium brand. So the quality and sound should be top notch. If you are after the JDM, brand, sound, look and rarity then go for the Amuse exhaust. Otherwise if you are looking into the performance gain, go with the GTM or Fast Intentions 3" CBE. Oh BTW, they are also top quality products.
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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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