{"product_id":"active-autowerke-bmw-e46-m3-exhaust-section-1-with-100-cell-hi-glow-catalysts-11-010","title":"Active Autowerke BMW E46 M3 Exhaust SECTION 1 with 100 CELL Hi Glow Catalysts (11-010)","description":"\u003cp\u003eActive Autowerke BMW E46 M3 Exhaust SECTION 1 with 100 cell Hi Flow catalysts\u003cbr\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 \u003cp\u003eDesign and Concept:\u003cbr\u003eFactory 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?\u003c\/p\u003e \u003cp\u003eSolution:\u003cbr\u003eThe BMW 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.\u003c\/p\u003e \u003cp\u003eThis is the BMW section 1 - where the RASP like noise emits from.\u003cbr\u003eBMW 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.\u003c\/p\u003e \u003cp\u003eGone is the smell of unburnt fuel. A BIG advantage.\u003cbr\u003eGone is the RASP like sound. Another BIG advanatge.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eDesigned and recommended for Off Road Use\u003c\/li\u003e \u003cli\u003ePair of 100 CELL Hi Flow metallic exhaust catalysts included\u003c\/li\u003e \u003cli\u003eNo unburnt fuel like smell\u003c\/li\u003e \u003cli\u003eNO RASP like sound\u003c\/li\u003e \u003cli\u003eBrushed Finish for that industrial appeal\u003c\/li\u003e \u003cli\u003eConstructed from 100% 304 stainless steel\u003c\/li\u003e \u003cli\u003eUtilizes factory mounting points for easy bolt-on install\u003c\/li\u003e \u003cli\u003eTwo year warranty with Free Tech support\u003c\/li\u003e \u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cli\u003ePart Type:Exhaust Systems\u003c\/li\u003e\u003cli\u003eFitment Spec:Vehicle Specific\u003c\/li\u003e","brand":"Active AutoWerke","offers":[{"title":"Default Title","offer_id":52025764151588,"sku":"11-010","price":2184.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/6801\/0532\/files\/ShowProductImage_69a03872-542f-4ee4-8410-527d68e59db4.jpg?v=1771509714","url":"https:\/\/autohousesupply.com\/products\/active-autowerke-bmw-e46-m3-exhaust-section-1-with-100-cell-hi-glow-catalysts-11-010","provider":"AutoHouseSupply","version":"1.0","type":"link"}