Audi TT 225 1.8T MK1 / QS 00->06 DOWNPIPE / SPORTS CAT TO OEM
Tags: audi, turbo back system, tfsi, trim, road legal cat
Audi TT 225 1.8T MK1 / QS 00->06 DOWNPIPE / SPORTS CAT TO OEM
Available Options
Due to the uniqueness of our products and the way in which they are manufactured, there may at times be a production delay of up to 4 weeks from the initial purchase date.
If you would prefer to pay a deposit at this stage please contact us for details on how to arrange that as an alternative, with the balance payable on the shipping date.
**Please Note the Downpipe in the photos above has had the Optional Additional Ceramic Coating. As Standard the Coating / Wrap Finishes Just Before the Flex**
The BCS Powervalve road legal 100/200 cell cat is the ideal hardware upgrade when considering a power increase on the 1.8t 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 a 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
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 BCS Powervalve 100/200 cell cat is a public road or track.
As with virtually all of the 1.8t 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 20bhp kinetic, and then once mapped all the way up to a stage 3 the following figures are achievable (along with suitable additional hardware...)
The AXX BWA K03 Turbo Performance guide (Stock 197bhp / 207lbft (200ps)
- Stage 2+ custom remap 275-290 hp 355-360 lbft
(Performance figures are based on levels achieved by R-Tech Performance
We recommend a new turbo to the front pipe gasket when performing the install although this is not essential.
The fitting time for this product is 4 hours