The Powervalve road legal 100/200 cell cat is the ideal hardware upgrade when considering a power increase on the 2.0 TSi engine. In addition, you will notice an audible uplift in the sound producing a nice sporty tone in the vehicle under acceleration.

The Powervalve downpipe and 100/200 cell cat connect directly to the OEM cat-back system with a minimum of fuss, utilizing the original Audi clamp. 

The dimensions employed on our unique cat will allow a gas flow equivalent to a cat delete pipe whilst remaining completely MOT and road legal.

The Data supporting the product is shown below

  Original Equipment Cat 

  Description                         Limits                          Actual Value

    Fast Idle Test

• Engine Speed               2500 - 3000 rpm                 
• Co                                  < 0.20%                            0.00%  PASS              
• HC                                  < 200 ppm                       1ppm   PASS
• Lambda                         0.97 - 1.03                        1ppm   PASS

   Natural Idle Test

• Engine Speed              450 - 1500 rpm                 
• Co                                  < 0.30%                            0.00%  PASS              

Powervalve 100 Cell Cat 

 Fast Idle Test

• Engine Speed               2500 - 3000 rpm                 
• Co                                  < 0.20%                            0.00%  PASS              
• HC                                  < 200 ppm                       4ppm   PASS
• Lambda                         0.97 - 1.03                        1ppm   PASS

   Natural Idle Test

• Engine Speed              450 - 1500 rpm                 
• Co                                  < 0.30%                            0.00%  PASS     

The primary use for the Powervalve 100/200 cell cat is public road or track.

As with virtually all of the TSi 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 downpipe 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 - 340bhp is achievable (along with suitable additional hardware...)

The fitting time for this product is 4 hours 

The following excerpt was taken from Audi driver magazine.