{"product_id":"active-autowerke-rear-exhaust-system-3-can-w-valves-maad-maxx-2014-m3-m4","title":"Active Autowerke Rear Exhaust System 3 Can w\/ valves (maad maxx) - 2014+ M3 \/ M4","description":"\u003ch2 data-mce-fragment=\"1\"\u003eTHE ULTIMATE F8X BMW M3 \u0026amp; M4 REAR EXHAUST SYSTEM - NOW WITH VALVES \u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAt Active Autowerke, it's not ONLY about making as much power as possible. For over 30 years, power has been the end result of improved performance due to our relentless desire to develop a refined, quality product. This philosophy behind our performance parts is best represented by one of the newest additions to our F80 BMW M3 and F82 BMW M4 collection.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Active Autowerke F8X rear exhaust was carefully engineered to eliminate the unflattering sound of the factory M3 and M4 exhaust, while also allowing for optimum flow and resonance. Every effort was made in addressing the not so appealing sound of the stock OEM exhaust, but in designing an exhaust worthy for an \"M\" car. We believe our rear exhaust combined with our mid-pipe offers the deepest sound and best performance of any other system on the market today. Available for both models, this axle-back exhaust gives your BMW the deep, throaty, growl a car of its caliber should have had from the factory! And NOW, after many requests from our dedicated customers, we are introducing a valved version of the ultimate exhaust which has been dubbed \"Maad Maxx\" by our team. We will update dyno charts later but this exhaust flows even better with its valving system.\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003ca href=\"http:\/\/f80.bimmerpost.com\/forums\/showthread.php?t=1194246\" title=\"active autowerke m4 exhaust review\" data-mce-fragment=\"1\" target=\"_blank\" data-mce-href=\"http:\/\/f80.bimmerpost.com\/forums\/showthread.php?t=1194246\"\u003eSee what actual customers are saying on BimmerPost!\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eKEY FEATURES\u003c\/h2\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMade in the USA\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e18+ WHP gain over stock\u003csup data-mce-fragment=\"1\"\u003e*\u003c\/sup\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e30+ LB-FT gain over stock\u003csup data-mce-fragment=\"1\"\u003e*\u003c\/sup\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eQuicker turbo spool\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eLow, Deep Rumble\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFlex joints to reduce vibration\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eDouble-canned muffler to reduce resonance\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eEach exhaust test-fit on our F8X Exhaust Fixture\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eGuaranteed to fit all F80 BMW M3\/F82 BMW M4\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eIncludes all necessary installation hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e*W\u003cem data-mce-fragment=\"1\"\u003ehen paired with\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.urotuning.com\/products\/active-autowerke-performance-mid-pipes-s55-f8x-bmw-m3-m4-aa-exhf80-mid?variant=8385500938295\" title=\"f8x bmw m3 bmw m4 performance mid pipe\" target=\"_blank\"\u003eActive Autowerke F8X Mid-Pipe\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eMUSTANG DYNO RESULTS:\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/c1.staticflickr.com\/1\/628\/21607095396_132b0d3266_c.jpg\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/c1.staticflickr.com\/1\/628\/21607095396_132b0d3266_c.jpg\"\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eMODIFICATIONS:\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eActive Autowerke F8x Mid-Pipe\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eActive Autowerke F8X Rear Exhaust Section\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eRESULTS:\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eRED Line Stock Figures: 380 \u003cem data-mce-fragment=\"1\"\u003eWHP | \u003c\/em\u003e371 \u003cem data-mce-fragment=\"1\"\u003eWTQ\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eBLUE Line Full Active Autowerke Exhaust: 398 \u003cem data-mce-fragment=\"1\"\u003eWHP | 401 WTQ\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGOLD Line Full Active Autowerke Exhaust Run 2: 397 \u003cem data-mce-fragment=\"1\"\u003eWHP | \u003c\/em\u003e398 \u003cem data-mce-fragment=\"1\"\u003eWTQ\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNote:\u003cstrong data-mce-fragment=\"1\"\u003e \u003cem data-mce-fragment=\"1\"\u003eActive Autowerke Full Exhaust System is recommended for, BUT NOT LIMITED TO, off-road or racing applications.\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eREFINEMENT MEETS PERFORMANCE:\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe OEM F8X exhaust utilizes the services of middle and rear silencers as well as a pair of exhaust valves. It is supposed to be a freely-flowing exhaust that produces an external sound that meets the demands of an M3 or M4.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe middle silencer has a small crossover that allows for noise dampening while the rear silencer (muffler) has a reflection chamber on either end that re-directs exhaust gases to the opposite side they entered from (drive's side exhaust exits on the passenger side). When the exhaust valves are closed, this helps eliminate the backpressure buildup that occurs during noise dampening.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAfter analyzing the factory exhaust, we realized less would be more in regards to our F8X exhaust.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWe began with a complete redesign of the mid-pipes. This involved drastically increasing exhaust flow as well as reducing the uneven, out-of-sync turbocharger sound that many F8X owners have complained about on the forums. We were able to achieve this on our F8X Mid-Pipe (sold separately) by using a single pipe that not only cancels out the offensive sound but allows unrestricted exhaust flow.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe most noticeable difference between the Active Autowerke F8X Rear Exhaust Section and the BMW factory exhaust is how we utilized the muffler. Our design incorporates two mufflers that create a huge resonance chamber to further cancel out the weed eater noise.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis design also allows exhaust gases to crossover freely without being forced in a certain direction - eliminating backpressure without sacrificing that deep, aggressive rumble that some turbocharged cars are known for.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Black","offer_id":42265561432226,"sku":"11-073B","price":3539.5,"currency_code":"CAD","in_stock":true},{"title":"Brushed","offer_id":42265561464994,"sku":"11-073","price":3442.3,"currency_code":"CAD","in_stock":true},{"title":"Carbon","offer_id":42265561497762,"sku":"11-073C","price":4131.1,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0527\/9953\/7314\/products\/MadMax2_2048x_937cb3cc-7e9a-415a-907b-29b3f22ff024.jpg?v=1655024646","url":"https:\/\/broxtuning.ca\/products\/active-autowerke-rear-exhaust-system-3-can-w-valves-maad-maxx-2014-m3-m4","provider":"Brox Tuning","version":"1.0","type":"link"}