AWE Tuning Audi B9 S4 Resonated For Performance Catalyst SwitchPath Exhaust w/ Carbon Fiber Tips
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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
- 90mm or 102mm double-walled tips available in chrome silver or diamond black
- 96mm double-walled stainless steel tips with carbon sleeve
- 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
SwitchPath™ Exhaust
The SwitchPath™ valved solution is for those who want complete control of their S4’s 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 you’re 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 with many factory valved systems. This sound will go away within a few minutes and you will be off to the races in no time.
Exhaust configurations recommended for use with aftermarket catalysts:
Given the increase of airflow when introducing an aftermarket catalyst, special resonators were developed to keep sound frequencies in check. These larger resonators are included in exhaust configurations labeled as "Resonated for Performance Catalyst," and available independently (to be added to existing AWE exhausts) via the "Resonator Conversion Kit."
Please note: exhausts labeled "Resonated for Performance Catalyst " and the Resonator Conversion Kit are recommended to be used with an aftermarket catalyst.
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? Learn more on AWE’s 180 Technology® in the tab above.
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
- 96mm double-walled stainless steel tips with carbon sleeve (Looking to convert your tips? Contact us here)
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.
