Upgrading the center section of your exhaust often removes some restrictions, mainly catalytic converters, giving your vehicle both more power and more sound. We offer several different exhaust brands to get your vehicle sounding exactly the way you want it to!
These Supersprint sport catalytic converters are designed to be used with their Race cat-less downpipes. These are metallic sport HJS catalytic converters that are some of the best sport cats on the market. Using these with the M3/M4 cat-less downpipes will produce more power over the stock system with less heat and less complication but will require special software, modules, or a stand-alone engine management to keep the check engine light and fault codes from appearing. Straight pipes with no cats are also available for full-race systems where no cats are required. These front cats are designed to be used only with the Supersprint section 2 H-pipe. Supersprint/HJS sport cats, combined with cat-less downpipes, are the best way for producing power and still cleansing the exhaust gas.
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