{"product_id":"active-autowerke-section-1-with-high-flow-cats-e46-m3","title":"Active Autowerke Section 1 with High Flow Cats - E46 M3","description":"\u003cp\u003e\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.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eDESIGN AND CONCEPT:\u003cbr data-mce-fragment=\"1\"\u003eFactory BMW exhaust SECTION 1 for BMW E46 M3. 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?\u003cbr data-mce-fragment=\"1\"\u003eIf a performance aftermarket headers was installed, how much better could one gain against the already BMW factory SECTION 1?\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eSOLUTION:\u003cbr data-mce-fragment=\"1\"\u003eThe BMW Factory Section 1 with RASP like sounds 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.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThis is the BMW section 1 - where the RASP like noise emits from.\u003cbr data-mce-fragment=\"1\"\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.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eGone is the smell of unburnt fuel. A BIG advantage.\u003cbr data-mce-fragment=\"1\"\u003eGone is the RASP like sound. Another BIG advantage.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eFEATURES:\u003cbr data-mce-fragment=\"1\"\u003eDesigned and recommended for Off Road Use\u003cbr data-mce-fragment=\"1\"\u003ePair of 100 CELL Hi Flow metallic exhaust catalysts included\u003cbr data-mce-fragment=\"1\"\u003eNo unburnt fuel like smell\u003cbr data-mce-fragment=\"1\"\u003eNO RASP like sound\u003cbr data-mce-fragment=\"1\"\u003eBrushed Finish for that industrial appeal\u003cbr data-mce-fragment=\"1\"\u003eConstructed from 100% 304 stainless steel\u003cbr data-mce-fragment=\"1\"\u003eUtilizes factory mounting points for easy bolt-on install\u003cbr data-mce-fragment=\"1\"\u003eTwo year warranty with Free Tech support\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Default Title","offer_id":42265560252578,"sku":"11-110","price":1326.55,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0527\/9953\/7314\/products\/double_pipe_2_2048x_67aeb854-1b89-4dee-9687-a00ab4eaa26b.jpg?v=1655024603","url":"https:\/\/broxtuning.ca\/products\/active-autowerke-section-1-with-high-flow-cats-e46-m3","provider":"Brox Tuning","version":"1.0","type":"link"}