BMW E46 M3 Exhaust SECTION 1 with 100 CELL hi flow catalysts by BMW tuner Active Autowerke

Active Autowerke BMW E46 M3 Exhaust SECTION 1 with 100 cell Hi Flow catalysts ***Before your order ships you MUST sign and return the Off Road Use Only Waiver available HERE. Please email, fax or take a photo of the completed form. You can email it to your sales rep or to info@activeautowerke.com and you can fax it to us at (305) 253-8921*** Combine the Active Autowerke Exhaust SECTION 1 with a pair of Hi Flow 100 cell metallic catalysts and you have part of a winning combination for your BMW E46 M3. Design and Concept: Why create an exhaust SECTION 1 when the USA version BMW factory SECTION 1 already comes from the factory as a straight through design with two separate pipes and resonators already built in on one side? If a performance aftermarket headers was installed, how much better could one gain against the already BMW factory SECTION 1? Solution: The Active Autowerke Exhaust SECTION 1 only comes into play if the E46 M3 already has a performance header already installed. One wil