add wishlist add wishlist show wishlist add compare add compare show compare preloader
We are currently experiencing longer than average ETA's due to global supply chain issues. We apologize for any inconveniences this may cause.
  • USD
  • EUR
  • GBP

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 

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:

Factory BMW exhaust SECTION 1 fr BMW E46 M3Why 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?


ThBMW Factory Section 1 with RASP like sounde Active Autowerke Exhaust SECTION 1 only comes into play if the E46 M3 already has a performance header already installed.  One will experience a high smell of unburnt fuel. (due to the open exhaust w/o any catalysts) and development of a RASPY like sound of which the BMW S54 engine is notorious for with the BMW Stock Section 1 when equipped. This raspy like sound is a matter of engine sound harmonics at a specific RPM range, a sort of resonance that is very loud and noticeable when the engine is revving at or above 4,000 rpm.

This is the BMW section 1 - where the RASP like noise emits from.




BMW SECTION 1 for Rasp Elimination on BMW E46 M3With the Active Autowerke Exhaust SECTION 1 installed, the BMW performance gains are about the same as running the factory section 1. However, that's impressive considering the exhaust flow is also being filtered while running through a pair of 100 cell catalysts. The power and performance is still there.

Gone is the smell of unburnt fuel. A BIG advantage.
Gone is the RASP like sound. Another BIG advanatge.

***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 and you can fax it to us at (305) 253-8921***









  • Designed and recommended for Off Road Use 
  • Pair of 100 CELL Hi Flow metallic exhaust catalysts included
  • No unburnt fuel like smell
  • NO RASP like sound
  • Brushed Finish for that industrial appeal
  • Constructed from 100% 304 stainless steel 
  • Utilizes factory mounting points for easy bolt-on install
  • Two year warranty with Free Tech support