Thanks - these are the bits I'm interested in 
Performance/Handling Modifications
Forge Diverter valve.
EVOMS intake
Autotech fuel pump.
REVO Stage 2+ (3 for the US guys!)
Milltek full turbo-back exhaust.
Forge Intercooler.
I'm just researching potential mods for the new toy I'm getting next year. You mention a custom remap in your build thread, but are there any other mods? I was reading Volkswagen Driver mag featured a APR-tuned Ed30 with 330bhp. Seems like a similar spec but without the larger intercooler and modified intake.
I've had APR, Custom-Code and REVO ECU software on my car and by far and away the best for me is the REVO. With the SPS+ controller it allows you to alter the Boost, fuelling and timing of the car within certain guidelines and hence make the best of your car's performance. Custom-Code was a very smooth progressive map, but ultimately didn't give the power or the flexibility I was after. APR was the first map I put on the car and to be honest it wasn't giving the figures I wanted at the time - other cars seemed to be making more power and were faster with the same hardware added!!! I've heard good things about Bluefin, but again it doesn't give you the flexibility that REVO does and on most of the RR's I've been on REVO comes out on top in the big bhp willy waving
GIAC is another well known tuner and my local tuner is a GIAC dealer and swears by it. I bought my GIAC DSG software from them, but am awaiting an update as certain functions aren't working on it (the map is still better than stock, but not at the level I want). There are a couple of smaller less known tuners like R-tech and Shark Performance, but I can't really give a true comment as I haven't had any dealings with them.
An ED30 with 330bhp will be a solid performer, but power can be had elsewhere and probably just as reliably. It all depends on how far you want to modify your car. Look at me, I only wanted a forum sticker when I joined here
My personal recommendation would be:-
Revision D OEM diverter valve - works just as well as the Forge and is £100 cheaper.
Cone style intake - there are many on the market and the one I'd lean towards would be my EVOM's - why? - No MAF or other faults coming up and it gives good gains.
Autotech fuel pump - well, really it is just uprated internals for the OEM pump, but it is much cheaper than the APR pump and from what I've seen, gives slightly better gains.
APR full 3" turbo-back exhaust - It doesn't give any extra gains over the Milltek or Blueflame, but it sounds absolutely gorgeous. If you want quieter, then have the Milltek resonated TBE.
The intercooler is interesting, personally I would always recommend a front mounted intercooler, but the ED30 theoretically had a "mounted behind the radiator" intercooler. The solution is to either go bigger and stick with the OEM location - in which case I would recommend the THS intercooler, or you go for a dual intercooler set-up - in which case I would recommend a Forge Twintercooler. Both give good gains and the cost to buy and fit is similar.
ECU remap - Well I'd have to say REVO.
Remember though, modifying a car is all about balance. You will find that as you give the car more power it will unsettle the suspension and the braking limitations begin to show.
It is properly scary how fast a tuned ED30 can put speed on and even more scary is how suddenly you realise that the next corner is coming up too fast, at which point you need the brakes and suspension.
I'd rather have uprated brakes and suspension and not need them, than not have them and need them
HTH
