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AMS Performance 2020+ Toyota Supra A90 Street Downpipe w/GESI Catalytic Converter
Power comes in earlier and turbo spool-up is significantly improved. The long gradual transitions within the mandrel bent pipe section allows exhaust gasses to maintain velocity without a buildup of back pressure inside of the system. The 4.5″ full mandrel bent downpipe is the best performing and mo...
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