Audi B8/B8.5 S4/S5 3.0T Downpipes For Factory Cat Back Exhaust

Change the tone of your B8 S4/S5  3.0T exhaust with an easy-to-install downpipes with integrated X-pipe to your factory cat back exhaust. The ECS Tuning downpipe installs to your factory cats and then reduces down to an x-pipe fitting to your factory exhaust to increase exhaust note and allow for better flow of exhaust gases.

The engineers at ECS Tuning have designed a direct fit dual downpipes featuring an X cross section in the center to balance exhaust pulses and increase expulsion of spent exhaust gases from the engine. But more importantly, installation of these downpies increases the factory exhaust system note exponentially giving a more tuned European sound. The ECS downpipes are mandrel bent from high quality 304L stainless steel, tig welded with smooth merged pipe joints for optimal flow, and finished off with a soft brushed finish for exceptional looks. Installation is a breeze and can be easily performed with the vehicle lifted on proper jack stands in your own driveway. Our in-depth installation PDF, located under the Installation Tab, walks you through everything from proper measurement, cutting, and install to ensure a perfect fit to your OEM exhaust. We've even included a complete set of clamps to make sure everything is properly installed without worry of leaks.

• 304L Stainless Steel
• Engineered and tested in-house
• Precision CNC mandrel bent
• TIG welded joints
• Adds increased tuned European sound with minimal interior dB/drone
• Will NOT cause CEL (Check Engine Light)