Milltek Sport have developed a quad tailpipe turbo-back exhaust system for the new Audi TT 2.0 TFSi. The new system, consisting of a large-bore downpipe (including hi-flow sports catalyst), connecting pipe, centre section and rear silencer, was unveiled at the 2006 Audi International show at Castle Combe. The TT performed extremely well on circuit and received very positive feedback from all those who saw it in action.
I highly recommend Milltek exhausts, an Audi technician told me that it's the nicest sounding exhaust for these cars.
We will also shorlty be releasing a twin tailpipe version of the system which is a direct replacement for the standard twin tailpipes.