The BCS Powervalve road legal, 5.5" round, 100 cell Twin Brick (2 x 100 Cell Bricks) Sports cat is the ideal hardware upgrade when considering a power increase on the 3.0 B58 engine. In addition, you will notice an audible uplift in the sound producing a nice sporty tone in the vehicle under acceleration.

The BCS Powervalve downpipe and 100-cell cat will connect to the OEM cat-back system with a minimum of fuss.

If you decide to upgrade to the full turbo-back system at a later stage then again, this is a straightforward procedure to complete the installation.

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              

BCS 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 BCS Powervalve 100 cell cat is a public road or track.

As with virtually all of the B58 engined vehicles, there is very little performance gain to be had from the cat-back system on its own, due to the incredibly restrictive 600 cell cat. However, by opting for our unique high flow cat which has a pipe configuration of 100mm into 90mm, the power potential will massively increase, firstly with an initial 22bhp kinetic, and then once mapped all the way up to a stage 3 and beyond, with figures in excess of 475 bhp achievable (along with suitable hardware...).

The fitting time for this product is 1 hour once the gearbox is cooled sufficiently for access to the stock cat mounting bracket to be gained.