{"product_id":"flashark-downpipe-exhaust-for-2010-2016-audi-s4-b8-b8-5-3-0t-v6","title":"Flashark 2.4\" Stainless Steel Downpipe Exhaust for 2010-2016 Audi S4 B8\/B8.5 3.0T V6","description":"\u003cp\u003eThe EA837 3.0T supercharged V6 is one of Audi's most tunable platforms — but the factory downpipes are the single largest bottleneck holding it back. From the factory, each bank routes exhaust through a tightly wound catalytic converter with a crush-bent neck-down that restricts flow to roughly 2.1 inches at the choke point. That restriction creates backpressure that slows the supercharger's response, caps midrange torque output, and puts a hard ceiling on what your ECU tuner can safely extract.\u003c\/p\u003e\n\u003cp\u003eThis Flashark 2.4-inch catless downpipe set replaces both the left and right factory downpipes from the factory flange to the cat-back connection. Each pipe is constructed from stainless steel with precision mandrel bends that maintain full internal diameter through every curve — no crimps, no neck-downs, no turbulence pockets. The silver stainless finish provides lasting corrosion resistance against road salt, moisture, and thermal cycling without the premium markup of polished tubing.\u003c\/p\u003e\n\u003cp\u003eThe result is immediate and noticeable: the supercharger builds boost faster from a stop, midrange torque from 2,500 RPM to redline gains a punch that the stock pipes simply choke off, and the exhaust note opens up, letting that supercharged V6 sound like the performance engine it is. When paired with a Stage 2 tune from APR, Integrated Engineering, 034Motorsport, or JHM, expect 30–50 AWHP and 40–60 lb-ft of torque over a Stage 1 flash alone.\u003c\/p\u003e\n\u003cp\u003eThis is a race-inspired performance part. It removes factory catalytic converters and requires a Stage 2 ECU tune to operate without diagnostic codes. For off-road and competition use only — check your local regulations before purchasing.\u003c\/p\u003e\n\u003cp\u003eBuilt from high-quality stainless steel with precision TIG welding, these downpipes are engineered for a true bolt-on installation. Each set comes complete with all necessary clamps, gaskets, and hardware — no cutting, no welding, no fabrication required.\u003c\/p\u003e\n\u003cp\u003eWhether you're building a track weapon or upgrading for enhanced daily driving performance, these downpipes are the single most impactful upgrade for the 3.0T V6 platform.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e2.4\" Mandrel-Bent Stainless Steel Tubing\u003c\/strong\u003e — Full 2.4-inch inner diameter from flange to outlet on both left and right pipes. Smooth mandrel bends eliminate the crush-bent restrictions found on the factory downpipes, delivering measurably faster exhaust gas velocity and reduced backpressure across the entire RPM range\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCatless Design (Race-Off-Road) \u003c\/strong\u003e— Removes the factory catalytic converters entirely on both banks. The OEM cats are the single largest flow restriction in the 3.0T exhaust system — eliminating them drops backpressure significantly, which directly translates to faster boost response, stronger midrange torque, and higher peak horsepower with a proper Stage 2 tune\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePre-Welded O2 Sensor Bungs\u003c\/strong\u003e — Both downstream oxygen sensor mounting points are pre-welded to the pipes for plug-and-play factory-sensor installation. No welding, no drilling, no guessing sensor placement — thread in your factory O2 sensors and connect\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision TIG Welding \u003c\/strong\u003e— Every joint is TIG-welded for full penetration and long-term durability at extreme exhaust temperatures. No MIG tack welds, no weak points that crack after thermal cycling — built to withstand repeated heat cycles from daily-driven and track-use vehicles alike\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCNC-Machined Flanges \u003c\/strong\u003e— Computer-numerically-controlled machined flanges on every connection point deliver flat, leak-free sealing surfaces. No warped castings, no gasket creep — bolt it on once and it stays sealed\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eComplete Hardware Kit Included \u003c\/strong\u003e— Every clamp, gasket, bolt, and nut required for installation is in the box. Stainless steel exhaust clamps, multi-layer gaskets, and M10 grade hardware — no trips to the hardware store\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLeft \u0026amp; Right Pair (Complete Set) \u003c\/strong\u003e— Both driver-side and passenger-side downpipes included. The EA837 3.0T V6 has two independent exhaust banks with separate factory cats — replacing both simultaneously is essential for balanced flow and consistent performance gains\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSilver Stainless Finish \u003c\/strong\u003e— Professional silver stainless steel finish resists the corrosive combination of road salt, moisture, and thermal cycling that causes mild steel and aluminized pipes to rust through within two winters. No painted coatings to peel or blister under heat cycling — solid stainless through and through\u003c\/p\u003e\n\n\u003ch3\u003eWhy Go Catless?\u003c\/h3\u003e\n\u003cp\u003eThe factory catalytic converters on the Audi 3.0T V6 are the single biggest flow restriction in the exhaust system. These cats are designed for emissions compliance, not performance — they create significant backpressure that chokes your engine's breathing ability.\u003c\/p\u003e\n\u003cp\u003eSwapping them out with high-flow catless downpipes opens up the path for exhaust gases to exit faster and more efficiently. The result:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFaster turbo spool\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— reduced backpressure means turbos reach boost pressure quicker\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStronger mid-range torque\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— feel the pull from 2,500 RPM to redline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMore aggressive exhaust note\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— the supercharged V6 sounds incredible with free-flowing exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved top-end power\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— less restriction = more horsepower up top\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter throttle response\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— sharper, more immediate acceleration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you're chasing lap times on track days or building a weekend performance sedan, catless downpipes are the #1 bolt-on upgrade for the 3.0T V6 platform.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePro Tip:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFor maximum gains and to eliminate Check Engine Lights, pair these downpipes with a performance tune from APR, Integrated Engineering (IE), 034Motorsport, or JHM.\u003c\/p\u003e","brand":"Flashark","offers":[{"title":"Default Title","offer_id":51505061593386,"sku":"FLJN-EXS22-00049002","price":257.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0293\/4423\/5619\/files\/Flashark-2.4_-Stainless-Steel-Downpipe-Exhaust-for-2010-2016-Audi-S4-B8-B8.5-3.0T-V6-Flashark-107942580.png?v=1779379414","url":"https:\/\/flasharkracing.com\/products\/flashark-downpipe-exhaust-for-2010-2016-audi-s4-b8-b8-5-3-0t-v6","provider":"Flashark","version":"1.0","type":"link"}