{"product_id":"valvetronic-designs-audi-b9-s4-s5-valved-sport-exhaust-system","title":"Valvetronic Designs Valved Sport Exhaust System - 2017-2024 Audi S4 \u0026 S5 (B9)","description":"\u003cp\u003eThe EA839 3.0L V6 in the Audi S4 and S5 (B9) has more voice than the factory exhaust lets on. The Valvetronic Designs Valved Sport Exhaust System is a single, complete downpipe-back system built in full T304 stainless steel, so you are not stitching together a resonator from one vendor and an axle-back from another to get the sound you want.\u003c\/p\u003e\u003cp\u003eElectronic valve control lets you switch between a bold, aggressive tone with sharp overrun crackles when the valves are open and a quiet, factory-like idle when they are closed. Paired with the OEM downpipe, there is no added cabin drone, so the car stays comfortable to live with every day.\u003c\/p\u003e\u003cdiv style=\"position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%;\"\u003e\u003ciframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0;\" title=\"Audi S4 B9 with Valvetronic Designs Full Exhaust Sound Demo\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/ssya6IqyFNs?rel=0\" loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003ch3\u003eWhy Upgrade\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOne-piece system design means you never have to mix a resonator from one vendor with an axle-back from another\u003c\/li\u003e\n\u003cli\u003eElectronic valve control switches between aggressive and refined sound instantly from a key fob remote\u003c\/li\u003e\n\u003cli\u003eFull mandrel-bent construction maximizes flow for improved throttle response\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eConstruction\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFull T304 stainless steel tubing, mandrel-bent for maximum flow\u003c\/li\u003e\n\u003cli\u003ePrecision TIG welds for strength and long-term durability\u003c\/li\u003e\n\u003cli\u003e16.4 lbs lighter than the OEM exhaust system\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eImportant Compatibility Information\u003c\/h3\u003e\u003cp\u003eThis system is engineered for the S4 and S5's 3.0L V6 (EA839). Need the same treatment for an Audi B9 RS5? See the \u003ca href=\"\/products\/valvetronic-designs-audi-b9-rs5-valved-sport-exhaust-system\"\u003eValvetronic Designs Audi B9 RS5 Valved Sport Exhaust System\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\u003cp\u003eS4 sedan installations are a direct bolt-on. S5 coupe installations require a minor mid-section modification to shorten the pipe for proper fitment; if you have questions about your specific build before ordering, \u003ca href=\"\/pages\/contact-us\"\u003econtact your BMP Tuning rep\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFull T304 stainless steel valved exhaust system\u003c\/li\u003e\n\u003cli\u003eElectronic exhaust valves with key fob remote control\u003c\/li\u003e\n\u003cli\u003eAll clamps and hardware needed for installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis system bolts up to your existing OEM or aftermarket downpipe; the downpipe itself is not included.\u003c\/p\u003e\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFitment: 2017-2024 Audi S4 (B9) Sedan and S5 (B9) Coupe\u003c\/li\u003e\n\u003cli\u003eMaterial: Mandrel-bent T304 stainless steel\u003c\/li\u003e\n\u003cli\u003eWeight savings: 16.4 lbs lighter than OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eMPN\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbon Fiber\u003c\/td\u003e\n\u003ctd\u003eV044 AUD.B9.S4.VSES.BR.RC\u003c\/td\u003e\n\u003ctd\u003eAUD.B9.S4.VSES.BR.RC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003ctd\u003eV044 AUD.B9.S4.VSES.BR.BLK\u003c\/td\u003e\n\u003ctd\u003eAUD.B9.S4.VSES.BR.BLK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChrome\u003c\/td\u003e\n\u003ctd\u003eV044 AUD.B9.S4.VSES.BR.CH\u003c\/td\u003e\n\u003ctd\u003eAUD.B9.S4.VSES.BR.CH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBurnt\u003c\/td\u003e\n\u003ctd\u003eV044 AUD.B9.S4.VSES.BR.BRT\u003c\/td\u003e\n\u003ctd\u003eAUD.B9.S4.VSES.BR.BRT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForged Carbon Fiber\u003c\/td\u003e\n\u003ctd\u003eV044 AUD.B9.S4.VSES.BR.FC\u003c\/td\u003e\n\u003ctd\u003eAUD.B9.S4.VSES.BR.FC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrushed\u003c\/td\u003e\n\u003ctd\u003eV044 AUD.B9.S4.VSES.BR.BRSH\u003c\/td\u003e\n\u003ctd\u003eAUD.B9.S4.VSES.BR.BRSH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eCan I switch between a quiet and an aggressive exhaust note?\u003c\/strong\u003e\u003cbr\u003eYes. The electronic valve control opens or closes the valves instantly from the included key fob remote.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this add drone to the cabin?\u003c\/strong\u003e\u003cbr\u003eNo. Paired with the OEM downpipe, the system runs drone-free with the valves closed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs installation the same for S4 and S5?\u003c\/strong\u003e\u003cbr\u003eNo. S4 sedans are a direct bolt-on, while S5 coupes need a minor mid-section modification. Contact your BMP Tuning rep if you're unsure how that applies to your car.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy choose a full system over a separate resonator and axle-back?\u003c\/strong\u003e\u003cbr\u003eA one-piece design avoids the fitment and tone mismatches that can come from mixing components sourced from different vendors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat should I do if the exhaust doesn't fit correctly when it arrives?\u003c\/strong\u003e\u003cbr\u003eContact your BMP Tuning rep before you install or heat-cycle the system so we can help resolve the issue.\u003c\/p\u003e","brand":"Valvetronic Designs","offers":[{"title":"Carbon Fiber","offer_id":51289886294263,"sku":"V044 AUD.B9.S4.VSES.BR.RC","price":2499.99,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":51289886327031,"sku":"V044 AUD.B9.S4.VSES.BR.BLK","price":2499.99,"currency_code":"USD","in_stock":true},{"title":"Chrome","offer_id":51289886359799,"sku":"V044 AUD.B9.S4.VSES.BR.CH","price":2499.0,"currency_code":"USD","in_stock":true},{"title":"Burnt","offer_id":51289886392567,"sku":"V044 AUD.B9.S4.VSES.BR.BRT","price":2499.99,"currency_code":"USD","in_stock":true},{"title":"Forged Carbon Fiber","offer_id":51289886425335,"sku":"V044 AUD.B9.S4.VSES.BR.FC","price":2499.99,"currency_code":"USD","in_stock":true},{"title":"Brushed","offer_id":51289886458103,"sku":"V044 AUD.B9.S4.VSES.BR.BRSH","price":2499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0024\/4898\/2060\/files\/A7405505_8b15ceaa-26a2-4d5e-a024-599122f6765b.jpg?v=1791583153","url":"https:\/\/blackforestindustries.com\/products\/valvetronic-designs-audi-b9-s4-s5-valved-sport-exhaust-system","provider":"Black Forest Industries","version":"1.0","type":"link"}