BMW E46 M3 Exhaust SECTION 1 with Active AFlow extra high flow catalysts F36 and octane levels unique to

and octane levels unique to other countries

Lean/Rich evaluation

Hard coat anodized for long life and reliability

Active Autowerke Toyota GR Corolla Signature Catted Downpipe Benefits

If you are an N54 powered BMW 335i owner

BMW E46 M3 Exhaust SECTION 1 with Active AFlow extra high flow catalysts F36 and octane levels unique toActive Autowerke BMW E46 M3 Exhaust SECTION 1 with Active AFlow ultra high flow catalysts NO PERFORMANCE TUNE NEEDED. Combine the Active Autowerke Exhaust SECTION 1 with a pair of Active AFlow 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