Used AMD in Thurrock yesterday and would reccomend them highly.
I decided on the AmD map due to the fact that they actually put it on the rollers and do full diagnostics before changing anything. It was a very good job they did that as my DV was split and my original rolling road showed only 174hp!
Also there service and advice on the phone and by e-mail was impeccable. As opposed to my nearest REVO dealer who failed to return my calls twice and consequently lost my business.
Final result incl BSH True Seal intake = 257hp and 285lb/ft of torque and a massive smile on my face, car is transformed.
N.B people will dispute AmD's rollers, but this car once rolling is as quick (real world) as my 265hp S3 RR'd at Automotive Developments.