Active Autowerke 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: https://images.activeautowerke.com/Installation%20PDF%27s/vehiclewaiver2.pdf 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 BMW Factory Section 1 with RASP like sound 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. With 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: https://images.activeautowerke.com/Installation%20PDF%27s/vehiclewaiver2.pdf 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*** FEATURES: -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

• Weight (lb): 20.0
• Length (in): 41
• Width (in): 13
• Height (in): 9