AWE Tuning SwitchPath™ Exhaust, Gen 1 Audi R8 V8 4.2L

That 4.2 V8 revs to over 8,000 RPM's, why not let that high revving engine sing!?!? The Audi R8 4.2L SwitchPath™ Exhaust by AWE sets a new standard and enhances the glorious tone of that V8. Beyond the handcrafted detail that is standard for every AWE exhaust, this one packs a little something special: The R8 4.2L Exhaust incorporates a proprietary mechanical valve system that controls sound volume: Under part throttle and idle, valves route exhaust gasses through a central muffler, keeping sound tame and drone free. At 3/4 throttle application and more, the valves open and the system is unleashed – going into "straight pipe" mode. An in-cabin mounted electronic SwitchPath™ Remote toggles the mechanical valves between "normal" and "straight pipe mode." Practical. 

NOTE: Please note that due to the elimination of catalytic converters, this exhaust is legal only for racing vehicles which may never be used upon a highway.