Hi there, New to this forum but not new to the scene. Into my VAG/German cars and have currently got an A3 2001 AUM 1.8T. First car i've had with a fairly decent engine. Always messed about with the way my cars look, coilovers, nice wheels etc... But this is the first car that I have had which is worth doing engine upgrades to. What I've done so far. 1:- Forge 007p dumpvalve 2:- Pipercross dry panel filter 3:- Remap From my engine code, I was pretty sure my car is running a K03s but have been told different by a few people? What would be my next mod. Ive been told to start looking for a turbo back exhaust? What brands do people recommend or use? Im in the Bucks area. Also, what sort of prices to i need to prepare myself to pay for one. I would post some pictures up but my wheels and coilovers are on order so car looks pretty standard. Only thing i have done externally is debadged the rear.