The Powervalve REV II Turbo-back (with cat delete pipe) WRC exhaust is our loudest option for the Audi S3 2.0 TFSi, providing you with the maximum possible sports tone both externally and internally above the stock exhaust note.

When the car is running off boost (Cruising and driving sedately), there is a pronounced sports tone, however, as you are no doubt already aware if you are looking to create the best possible audible thrill...

Powervalve offers a unique perspective on exhaust technology, providing the driver with the option of two distinct natures. When the car is pottering around or cruising the sound is at once uplifted and noticeable yet controlled and non-intrusive. However, once the car is driven aggressively and produces a key level of boost pressure everything changes and the sound becomes purposeful and redefined reflecting the true essence of the S3 2.0 TFSi. All of which are under the complete control of your right foot, therefore, you determine the sound minute to minute depending on your particular driving requirements. By using this unique interaction, the driver ceases to become desensitized in the way you would with a non-variable sound, leaving you looking for more time behind the wheel...

The system has a greater audible volume than the cat back offering, however, with careful design and development we have created a system that ensures that any unwanted in-car frequencies are removed, leaving you with a perfect drone-free experience, together with our characterful pop and burble, free-revving sound.

The primary use for the WRC variant system with cat delete pipe is the track or closed/private road, as this product is illegal for road use.

As with virtually all of the TFSi engined vehicles, there is very little performance gain to be had from the cat-back system on its own, due to the incredibly restrictive downpipe and twin OEM cats. However, by opting for our unique down pipe and high flow cat the power potential will massively increase, firstly with an initial 22bhp kinetic, and then once mapped all the way up to a stage 3 the following figures are achievable (along with suitable additional hardware...)

The TFSi K04-based BYD BWJ BHZ CDL Performance guide

• Stage 2  custom remap                                                  340 hp        340 lbft
• Stage 2+ custom remap                                                 380 hp        400 lbft
• Stage 3 k04 0r k03 hybrid custom remap                     550 hp        550 lbft

(all Performance figures are based on levels achieved by R-Tech Performance)

When considering the power requirement from your S3 we recommend the 76mm (up to 400 bhp) or 90mm (400 bhp+) downpipe to go with this system.

The images below show the comparison between the 76mm and 90mm down pipe options we offer.

 Please call for details...

The trim options for this product are

        Lightning / Lightning Black                 Typhoon/Typhoon Black 

We also recommend that the Powerflex up-rated dog-bone mount is selected when purchasing the full turbo-back system. This will decrease the amount of stress on your downpipe once the car's torque has been increased after re-mapping.