2.5 or 3 inch exhaust
Hi I'm crunntly running a 3inch down pipe with 2.5 type r centre and a 2.5 inch back the car is stage one and made 328bhp on dyno but inlet temp were playing up so wound it back to 316 to be safe I now fitting a fmic and pressure reg so the question is will the 2.5 be ok or restrictive will I be better of with a 3inch ?
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