Meet the perfected B9 S4 soundtrack.
- 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 features AWE’s proprietary drone-canceling solution, 180 Technology®
- SwitchPath™ Exhaust can be controlled with an optional handheld remote, or factory valve programming
- Downpipes and precision-engineered x-pipe included in all editions
- Compatible with standard and sport differentials
- 90mm or 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
Sound Perfection: AWE 180 Technology®
Perfect tone, compliments of AWE 180 Technology®.
As exhaust gases exit the 3.0T engine and flow into an AWE 180 Technology® equipped 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?
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.
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
What’s 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.
