Packed in self employment a few weeks back, sold the tranny and bought a golf gt tdi 150. It was pretty quick to start with, but I got a bloke to remap the ECU yesterday and it's erm..... damn quick now. It's easily done on most vehicles after 1999 and shows greater gains on turbo diesel engines (around 45bhp for mine). If anyone is interested it's a guy that I know has been doing it for years, anyone interested can e-mail me for details. I have no financial interest in this company, I just wanted to share my experience with anyone that could benefit from it.