The AVO three inch stainless steel downpipe was designed specially with a cast iron outlet and the option for a high performance 5" catalytic converter. AVO has incorporated a splitter to deflect gases coming from the wastegate to improve turbo spool up. The AVO downpipe with catalytic converter incorporated into the design is now the worlds most potent FR-S and Subaru downpipe combination. Their Catless downpipe is intended for RACE USE ONLY and has no ceramic.
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