From the masters of S4 performance, AWE proudly presents the B9 S4 exhaust solution. Signature AWE tone, performance, and options for every taste and budget.

• Max gains of 16 hp and 17 ft-lbs of torque at the crank (exhaust)
• Available as sophisticated Touring Edition, unleashed Track Edition, and valved SwitchPath
• Touring Edition Exhausts feature AWE’s proprietary drone-cancelling solution, 180 Technology
• SwitchPath Exhaust can be controlled with optional handheld remote, or factory valve programming
• Downpipes and precision-engineered x-pipe included in all editions
• Specifically engineered downpipe resonators for use with aftermarket catalysts available separately
• Compatible with standard and sport differentials
• 102mm double-walled tips available in chrome silver or diamond black
• Proudly engineered, designed, and manufactured in-house at AWE, in the USA
• Less is more: clean, straight-through design maximizes performance
• Handcrafted from dual 2.5 CNC mandrel-bent U.S.-sourced .065 wall T304L stainless steel
• Direct bolt-on system, factory-like install simplicity
• Perfect fitment – guaranteed
• No Check Engine Light – guaranteed
• Featuring the AWE Lifetime Exhaust Warranty
  

  Meet the perfected B9 S4 soundtrack.

  Track Edition Exhaust:

  For those who like it loud, go Track.

  The Track Edition Exhaust is equipped with the same precision-engineering as its Touring Edition counterpart, minus the resonators up front and 180 Technology resonators in the rear. Instead, the Track Edition comes complete with non-resonated downpipes and straight pipe sections — leaving the integrated x-pipe as the only filter.

  This version is known to get rowdy, and may be too much for many. For that reason, this particular version cannot be returned due to sound preference. Prepare yourself.

  Touring Edition Exhaust:

  The best just got better.

  Signature AWE howl, delivered. The Touring Edition is the sophisticated member of the B9 S4 exhaust family.

  The Touring Edition Exhaust removes the factory valving and replaces it with AWEs180 Technologydrone-cancelling resonators (and electronic valve simulators). This solution provides for a perfect, signature AWE experience: civil within the cabin while cruising, yet all the pops and burbles during acceleration and downshifts.

  The Touring Edition Exhaust comes complete with 180 Technology resonators, a precision-engineered x-pipe, resonated downpipes, and your choice of 90 or 102mm tips in either diamond black or chrome silver.

  Perfect tone, compliments of AWE180 Technology.

  As exhaust gases exit the 3.0T engine and flow into an AWE180 Technologyequipped resonator, they pass through strategically located ports, and into reflection chambers. Sound waves, carried by these exhaust gasses, bounce off the walls of the reflection chambers. By controlling the size and location of the ports and the chambers, we also control when the sound waves exit the chambers.

  The specific timing of when the reflected sound waves rejoin the main exhaust flow creates a one-hundred-and-eighty-degree out-of-phase sound wave that cancels out problematic frequencies. Cool, right? Learn more on AWEs 180 Technology in the tab above.

  SwitchPath Exhaust:

  The SwitchPath valved solution is for those who want complete control of their S4s volume and tone, at their fingertips.

  The SwitchPath Exhaust comes complete with non-resonated downpipes, a precision-engineered x-pipe mid-section, and two valved muffler sections which can be controlled via the SwitchPath Remote.

  Sneaking out in the morning? Keep the valve closed.

  Ready to rumble? Open the valve and let them know youre coming.

  Pro tip: we recommend and encourage pairing the SwitchPath Exhaust with the SwitchPath Remote versus using the factory operation for the best SwitchPath experience.

  Note: you may notice a slight rattle upon cold start as you would withmany factory valved systems. This sound will go away within a few minutes and you will be off to the races in no time.

  Tip Options:

  All tip options include the AWE logo, and double walling to ensure a mirror finish even under hard usage. All tips are individually adjustable, allowing depth into the bumper to be set according to personal taste.

  • 102mm or 90mm diamond black tips
  • 102mm or 90mm chrome silver tips

  Whats in the box?

  Complete SwitchPath, Touring or Track Edition Edition Exhaust, four double-walled tips is chosen color and size, resonated or non-resonated downpipes, installation instructions, and required hardware.

Install Instructions can be found here.