Sam is more adept at the GEMS system. Used to run a LINK ecu in his MY99 UK Turbo and I think he still maps them (I know I do!)
Personally I have encountered certain people (Jools will know who I mean ) who have had their car mapped "too far o the edge" by Sam and have blown turbos and clutches!
Good knowledge but doesn't know when to stop.
AndyF is your man for now (I've got some DATALOGIT SOFTWARE coming in Feb, hopefully!)
Russell