HKS may sound good, but it's only an axle. If you want a good axle, get the GReddy Racing Ti-C. you can purchase that on hopupracing.com If you are looking for a good catback, i'd recommend Tsudo Catback that is what i have. Performance is GREAT and by sound....trust me it's perfect. not too loud not too low. If you don't go Tsudo, i'd also recommend ARN N2 Catback, but it's like $500+ The website for the ark n2 is arkspeedracing.com For Tsudo, website is speed-element.com and it's cheap.
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