After a fair bit of research, I'm thinking about picking up an early a4 3.0 tdi after being surprised at how cheap they could be had. I'm going to be looking to tuned/mapped it straight away, and just have a couple of hardware-related questions that I was unable to find answers to. Firstly, what options would I have for a full/turbo-back exhaust system? I'd be looking to get a de-cat, so I figure getting a turbo-back system would be my best bet, but was disappointed to see that milltek aren't offering one. Would it have to be a custom system, and if so, where is the best place to go for one in the UK? Am I right in thinking that a 2005 model won't have a DPF and this is something I don't have to worry about? Secondly, what options do I have for a decent intake/IC system? I haven't managed to find an FMIC kit available for this model, is this something that would have to be custom built as well, and again, where should I go for such a build? I've read a bit about these intake manifold flaps that are causing problems for some owners, is there anywhere I can purchase a replacement manifold considering emissions aren't much of a concern for me? Any help on these matters would be greatly appreciated, and thanks in advance for your help.