{"product_id":"e46-m3-header-set","title":"E46 M3 Header Set","description":"\u003cp\u003eActive Autowerke BMW E46 M3 Header\u003c\/p\u003e\n\n\u003cp\u003e***Before your order ships you MUST ensure that your customer signs and returns the Race Use Only Waiver. If you want to send us a copy, 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***\u003c\/p\u003e\n\n\u003cp\u003eThe Active Autowerke BMW E46 M3 Header is designed to increase exhaust flow without losing power which can sometimes be a tricky proposition.\u003c\/p\u003e\n\n\u003cp\u003eThese headers are developed to create optimum flow and eliminate restriction that rob much desired horsepower. Following the famed BMW E46 M3 CSL headers, each individual header runner of the Active Autowerke header is cut to au00a0matched equal length to ensure a consistent exhaust scavenging (tolerance in lengths vary by bends to a mean average of 10-20mm).\u003c\/p\u003e\n\n\n\u003cp\u003eThey are suitable for naturally aspirated and supercharged forced induction applications, Active Autowerke's BMW E46 M3 Headers are made out of 100% 304 stainless steel, making durability a worry of the past.\u003c\/p\u003e\n\n\u003cp\u003eTake it from Robert Chang, BMWCC 2013 National Champion for C-MOD in his E46 M3 powered by the Active Autowerke headers.\"...These headers help to deliver the power when needed...\" You too can help unleash the hidden power in your E46 M3.\u003c\/p\u003e \n\n\u003cp\u003eAre they difficult to install? Absolutely not! Robust exhaust flanges with recessed mounting holes make it easy to install. If you can turn a ratchet, you'll be on your way to increasing horsepower\u003c\/p\u003e\n\n\u003cp\u003ePlus, all the gasket hardware that you will need is all included.\u003cbr\u003e\n-Exhaust manifold gasket from the header to the cylinder head. Includes (6 BMW factory gaskets).\u003cbr\u003e\n-Exhaust manifold nuts from the header to the cylinder head. Includes (16 BMW factory copper locking nuts).\u003cbr\u003e\n-EGR gasket. Include (1 BMW factory gasket).\u003cbr\u003e\n-Exhaust gasket from the header to the SECTION 1 exhaust. Includes (2 BMW factory gaskets).\u003c\/p\u003e\n\n\u003cp\u003eQuality Control. Each and every BMW E46 M3 header is test fitted to an actual BMW E46 M3 motoru00a0stand. There are fixtures to simulate engine bay features like inner fender and frame rail. Oxygen sensor placements are also checked for correct interference.\u003c\/p\u003e\n\n\u003cp\u003eThe factory exhaust catalysts are removed in the process, making this solution recommended for off-road applications. Add on ourBMW M3 Software Tune for even more power!\u003c\/p\u003e\n\n\u003cp\u003eOptional ADD-ON. Install and Active Autowerke BMW performance header or another BMW aftermarket brand connecting into your existing BMW factory exhaust system, there will be smell of un-burnt fuel, plus the added RASP like sound inherent in all BMW S54 motors. Click here to LEARN MORE on how to solve this issue with the SECTION 1.\u003c\/p\u003e\n\n\u003cp\u003eInput from Karl Hugh, Head of Engineering, Active Autowerke. \"...the SECTION 1 with 100 cell race style cats do not lose any power!!!! Even when we try them on the BMW E46 M3 powered with the 600 horsepower Supercharger, there is no loss in power!!!...\"\u003c\/p\u003e\n\n\u003cp\u003eNOTE:\u003cbr\u003e\n-HEADER SYSTEM IS DESIGNED FOR OFF ROAD USE AND RACING APPLICATION ONLY\u003cbr\u003e\n-M3 will have **CEL** without Active Autowerke Software Upgrade\u003c\/p\u003e\n\n\u003cp\u003e-WILL NOT FIT RHD CARS.\u003c\/p\u003e\n\n\u003cp\u003eFEATURES:\u003cbr\u003e\nCreates optimum flow and eliminates restriction\u003cbr\u003e\nMatched equal length runners delivers a consistent flow\u003cbr\u003e\nDyno Tested to provide improved HP and torque gains\u003cbr\u003e\nMade from 100% 304 stainless steel construction\u003cbr\u003e\nAvailable in a Polished or BRUSHED finish selection\u003cbr\u003e\nDesigned for Street and\/or Track Use\u003cbr\u003e\nBolt On Design with Precise Fitment\u003cbr\u003e\nBMW OEM Style fitment\u003cbr\u003e\nComplete hardware, includes all necessary gaskets and nuts\u003cbr\u003e\nOne year warranty\u003c\/p\u003e\n\n\u003cp\u003eTECH TIP:\u003c\/p\u003e\n\n\u003cp\u003eThe four oxygen sensors are temporarily removed to install the exhaust headers. Sometimes the exact placement of these sensors are not correct, resulting in a **CHECK ENGINE ** light. Active Autowerke has created a simple, efficient schematic diagram showing the exact placement with proper connections needed for a seamless re-install.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Default Title","offer_id":45004770115782,"sku":"11-008","price":721.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0081\/0804\/8420\/files\/a581e935-573e-4309-b220-db386c80d3d7.jpg?v=1758577942","url":"https:\/\/www.graveyardperformance.com\/products\/e46-m3-header-set","provider":"Graveyard Performance","version":"1.0","type":"link"}