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These improvements deliver an additional 35+ wheel HP
No need to suffer long periods of downtime for an engine build
Smoother more optimized intake air flow will improve the performance of any engines
please note your octane preferences
Fabspeed BMW B58 (40i) Sport Catalytic Converter Downpipe (2019+) 971 V6 (2017+) These improvements deliver an additionalThis downpipe feature German made HJS 200 cell EURO 6 compliant trimetallic catalytic converters. We use 4 in piping from the engine side to the cat, and 3 in tubing from the cat to the rest of the exhaust. Our larger catalytic converters are better because they allow for more exhaust flow and the increased catalysts surface area allows for better exhaust gas filtering which means emissions compliance that will NOT trigger a check engine light. Our
