okay so i have a mk4 1.8T but i had her REVO'd and since have advised 2 of my mates to get it, one had a mk5 gti and my god he cant stop smiling or buying me beers, i dont know what it was before but his is slightly up on mine, i have 210bhp to his 218bhp, and the torq's up around the 240 mark on both, as far as im awaire it basicly de restricts the fuel and air as well as the turbo, the restrictions were put in place to keep insurance's down for owners in the first place and as far as i know REVO say that all settings are still with in the VAG tolarances.... (Audi TT's 1.8 throws out about that)
all this and i have standard filter and exhaust and piss on standard MK5 GTIs which is why my mate rushed out to get his lol, MK5's are fantastic cars all the same and i am saving like mad haha...... keep up the good work.
and revo also do custom tunes for extras like filters exhausts etc etc, all programs are also all revos are car spacific, and id advice shell v power in for max effect lol.