Had my Altea 140 done at RS about 6 months ago. Like they say, its a custom map to your car. The final map was a little lower power than the max figure gained, but it was toned down a little as it got too smokey.
RS do a switching box too for a reasonable price so you can revert to standard map in a couple of minutes. And you can keep the box for any new map on your next car!
RS do a switching box too for a reasonable price so you can revert to standard map in a couple of minutes. And you can keep the box for any new map on your next car!