i had a cupra 180 and had revo stage 2 with 4bar fpr on. it was mapped taking into account the uprated air filter and downpipe with decat. all i can say is prior to downpipe and decat, the car felt bit strangled up top, but once all was in 80 onwards on a privat road obviousleythe car used to fly. could match my mates r32 golf mk5 through the whole of mid range which used to be good fun stage two also is a much smoother power curve as the power builds with bit more shove higher up the top end.
stage 2 for me was paying 50 quid over the stage 1 price.
hope that helps.
