Had a couple of you last time come along to this. Had some very good results.
Basically you get a before run on the rollers. A Custom remap and after on the rollers for Ł250 all in or Ł35 for a rolling road session.
If you have any doubts I'm sure Byzan_A4 could put your mind at rest. We took his 1.8T from around 140hp to 200hp.
Will be held here http://www.chippeduk.com/how-to-find-us.php
Please PM or email me contact detials if you would definately like to attend.