FAQ

What happens fitting a turbo downpipe that replaces the OEM particulate filter on a diesel car?

Audi A4/A5 2.7/3.0 TDI: How to find out which version of the downpipe fits your car

What is better, to remove the stock cat or to fit a metallic sports cat in its place?

What’s the difference between a centre exhaust and a centre pipe?

I can’t find a Supersprint exhaust for my car, what can I do?

How do you test the car on the dyno, are the published data accurate?

Why for some components is necessary to increase the length of the lambda sensor wires?

What modifications do I need to fit a Right + Left exhaust system on a car with a single side exit stock system?