Replace Both cats after the turbo. For maximum exhaust flow and increased turbo spool up, HKS offers Off-Road down pipes and front pipes for race use. Each 75mm mandrel down pipe and front pipe is a bolt on application that will mount to the stock turbo. Stainless steel coated. Fits Turbo Subaru WRX. Retail: $199.00
Hands down, best supplier of parts ANYWHERE...PERIOD. Fast service and very knowledgeable staff helped our build and continues to be a resource when......
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I LOVED THE SERVICE YOU GUYS GAVE ME WITH MY NEW WASTE GATE! TRULY HELPFUL AND GENEROUS. LOOK FORWARD TO BUYING MORE.
- Sheryl P. CasulA, Australia...
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