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B9 S4 3.0T Center X-Pipe

Sound great and save weight! Eliminate the center resonator on your OE system for a more aggressive exhaust note
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ECS Part #
$290.95 (Sale - Save 15%)
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Availability: In Stock, Ships in 1-3 Days
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Product Details

Change the tone of your B9 S4 3.0T exhaust with an easy-to-install upgrade from ECS Tuning! The ECS Tuning Center X-Pipe installs in place of the resonator located in the middle of the factory exhaust system to increase exhaust note and allow for better flow of exhaust gases.  Weighing in at 11.7 pounds, our X-Pipe also shaves off 4.6 pounds from the OEM center resonator!

The engineers at ECS Tuning have designed a direct fit dual exhaust pipe 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 the Center X-Pipe increases the factory exhaust note giving a more tuned European sound. The ECS X-pipe is fully CNC 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
  • X-Pipe is 11.7 lbs compared to the OEM center resonator at 16.3 lbs
  • Will NOT cause CEL (Check Engine Light)

Head over to our YouTube Channel for sound clips of the X-Pipe!

*Installation requires cutting of the OEM exhaust using an exhaust pipe cutter, reciprocating saw, or other similar tool. The Schwaben Exhaust Pipe Cutter is available for order as ES3106581.

**Does not include ECS Tunnel Brace shown in photograph

This Part Fits the Following Vehicles

Make Model Submodel Engine
Audi B9 S4 Quattro 3.0T
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

Kit Contents

Description Brand Qty
Exhaust Sleeve With Dual Clamps - Priced Each HJS - Corporate Logo 2
Dual Clamp Exhaust Sleeve - Priced Each Rein - Corporate Logo 2
Packaged Center X-Pipe ECS - Corporate Logo 1


ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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