live nr wycombe only place i know is in Aylesbury but they bit reluctant as they deal only with porsche or jap cars....
U after tune-up or just bhp & torque graphs
power egineering are very good, had my turbo dynoed there, was trying to set up a rr day there once, couldnt get enough interest though, it is quite expensive
YOUR FRIENDLY WINDSCREEN MAN
Another vote for Power Engineering here. I'm assuming you are talking about G-Force in Aylesbury?
Paul where abouts are you from? I've just moved in the last couple of weeks from Prestwood but I'm still back there on a very regular basis.