Metallic catalytic converter HJS, 100CPSI kit for OEM headers (Weld on connection) for BMW E46 M3 3.2i Coupé/Cabrio (US Version) '00 -> '06 (Sport - 2 x Ø60mm)
This Supersprint downpipe kit replaces the awfully restrictive, BMW factory, US M3 cats with HJS Motorsport, high flowing units.
The flow rate is virtually the same as the Supersprint cat-deleting straight pipes, yelding to substantial performance gains across the entire rpm range.
Installing this kit requires welding the new downpipe assembly into place, going unnoticed from a visual check.
The Supersprint cat system has O2 bungs and EGT threaded provisions, and factory-spec flanges, for a perfect fitment in conjunction with the Supersprint front exhaust section and with the stock exhaust, as well.
The Supersprint cat system has O2 bungs and EGT threaded provisions, and factory-spec flanges, for a perfect fitment in conjunction with the Supersprint front exhaust section and with the stock exhaust, as well.
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