AUDI S3 8P 76MM 100 Cell BCS Sports Cat Downpipe WEB SALE NOW ON
Road legal 100/200 cell cat is the ideal hardware upgrade when considering a power increase on the 2.0 TFSi 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 100/200 cell cat come with a connecting pipe to allow you to connect to the OEM cat-back system with the minimum of fuss. If you decide to upgrade to the full turbo-back system at a later stage then the connecting pipe simply swaps out again to allow the installation with a minimum of fuss.
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.Engine Speed 2500 - 3000 rpm. Lambda 0.97 - 1.03 1ppm PASS. Engine Speed 450 - 1500 rpm. The primary use for the BCS Powervalve 100/200 cell cat is a public road or track.
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).
If you require more power from your S3 we recommend the 76mm (up to 400 bhp) or 90mm (400 bhp+) down pipe to go with this system. The images below show the comparison between the 76mm and 90mm down pipe options we offer.
We recommend a new turbo to the front pipe gasket when performing the installation although this is not essential. 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.