Ive only been a member on this forum for a few days, and only had my 2007 S3 2T FSI for about 4 months. I bought it the same time as my brother bought his A3. We both had REVO remaps by Sports Tech in Ilkeston Derbyshire. The A3 Stage 1 remap was superb, big increase in performance with no engine bolt ons. My bro is really pleased with it. Cost his £250.
I have progressed my S3 to Stage 2 plus, again using Revo software through Sports Tech at Ilkeston. With all bolt ons required, Cold air intake, Miltek Exhaust, High Pressure fuel pump, all Revo recommended and a Sachs high performance clutch has cost me about £2200 but all done by professional mechanics and technicians. It now goes like a rocket ship.
So all in all Revo has proved good to me