{"product_id":"bmw-e46-m3-exhaust-section-1-with-100-cell-hi-flow-catalysts-by-bmw-tuner-active-autowerke","title":"BMW E46 M3 Exhaust SECTION 1 with 100 CELL hi flow catalysts by BMW tuner Active Autowerke","description":"\u003cp\u003eActive Autowerke BMW E46 M3 Exhaust SECTION 1 with 100 cell Hi Flow catalysts\u003c\/p\u003e\n\n\u003cp\u003e***Before your order ships you MUST sign and return the Off Road Use Only Waiver available HERE:\u003cbr\u003e\nhttps:\/\/images.activeautowerke.com\/Installation%20PDF%27s\/vehiclewaiver2.pdf\u003c\/p\u003e\n\n\u003cp\u003ePlease 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***\u003c\/p\u003e\n\n\u003cp\u003eCombine 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.\u003c\/p\u003e\n\n\u003cp\u003eDesign and Concept:\u003cbr\u003e\nWhy 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?\u003cbr\u003e\nIf a performance aftermarket headers was installed, how much better could one gain against the already BMW factory SECTION 1?\u003c\/p\u003e\n\n\u003cp\u003eSolution:\u003cbr\u003e\nThe 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.\u003c\/p\u003e\n\n\u003cp\u003eThis is the BMW section 1 - where the RASP like noise emits from.\u003c\/p\u003e\n\n\u003cp\u003eWith 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.\u003c\/p\u003e\n\n\u003cp\u003eGone is the smell of unburnt fuel. A BIG advantage.\u003cbr\u003e\nGone is the RASP like sound. Another BIG advanatge.\u003c\/p\u003e\n\n\u003cp\u003e***Before your order ships you MUST sign and return the Off Road Use Only Waiver available HERE:\u003cbr\u003e\nhttps:\/\/images.activeautowerke.com\/Installation%20PDF%27s\/vehiclewaiver2.pdf\u003c\/p\u003e\n\n\u003cp\u003ePlease 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***\u003c\/p\u003e\n\n\u003cp\u003eFEATURES:\u003cbr\u003e\n-Designed and recommended for Off Road Use\u003cbr\u003e\n-Pair of 100 CELL Hi Flow metallic exhaust catalysts included\u003cbr\u003e\n-No unburnt fuel like smell\u003cbr\u003e\n-NO RASP like sound\u003cbr\u003e\n-Brushed Finish for that industrial appeal\u003cbr\u003e\n-Constructed from 100% 304 stainless steel\u003cbr\u003e\n-Utilizes factory mounting points for easy bolt-on install\u003cbr\u003e\n-Two year warranty with Free Tech support\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Default Title","offer_id":45004778143942,"sku":"11-110","price":949.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0081\/0804\/8420\/files\/78d0a7a3-f519-4236-88e9-4b607b22fff5.jpg?v=1758578225","url":"https:\/\/www.graveyardperformance.com\/products\/bmw-e46-m3-exhaust-section-1-with-100-cell-hi-flow-catalysts-by-bmw-tuner-active-autowerke","provider":"Graveyard Performance","version":"1.0","type":"link"}