cat

So I'm having a chat with my mate about cats. He insists that you can just bash out a metallic core cat and to check any TFSI forums. However, when I look down my *ina special sports cat, it's clearly metallic, it feels solid that any poking at it will only bend the rolled up sheet of metal...

Hi guys, Just bought a 2007 A4 TDI 140 BRE, just wanted to double check if this is a DPF or a Cat? Build sheet contains "7GN - Emission Standard EU4, DPF preparation", which to my understanding meant prepared for DPF, but not fitted. I believe 7GG means one is fitted. The unit appears to be...

Hey everyone, I have a VERY annoying cat rattle in my 2002 1.8 na A3. I was just wondering if I can just bash it out or if a replacement is necessary? As there is a post cat sensor I'm pretty sceptical on bashing it out. Cheers

This is the brand new 76.0mm Audi S3 (8v) Downpipe from BCS Powervalve... Following on from the demand for ultimate flow we have developed this with clients looking at up to 600 bhp in mind. Featuring the oversized 100 cell cat with an open area equivalent to an 93.0mm open pipe and the brand...

Hi all, Looking for some advice on where to go with my S3, in short I'll be taking off my down pipe in the near future and want to know if it is possible to inspect/clean the turbo and/or the actuator whilst it's off? Also car is stock otherwise, would it be best to stick to the plan and...

Evening all. Looking to gut the pre-cats on the stock downpipes and use the non-fouler inserts but cant seem to find any videos on the web of a stock system with the pre-cats gutted. Unsure if its going to sound boomy or crap. Im only interested in that specific noise that the top end...