BMW E46 M3 Exhaust SECTION 1 with GESI ultra high flow catalysts f98 This upgrade increases your car

This upgrade increases your car HP an additional 35-50HP over the stage 2 system

your 328i should see a gain of roughly 15 horsepower and 12 lb

but configured by you to run without the catalysts for gains of additional horsepower

The custom Active Autowerke Filter mounts to the supercharger unit and is enclosed in a custom intake box engineered to incorporate factory design while forcing cool air to the air box

BMW E46 M3 Exhaust SECTION 1 with GESI ultra high flow catalysts f98 This upgrade increases your carActive Autowerke BMW E46 M3 Exhaust SECTION 1 with GESI ultra high flow catalysts NO PERFORMANCE TUNE NEEDED. Combine the Active Autowerke Exhaust SECTION 1 with a pair of GESI G Sport 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