there are guys on SCN using shark oerformance on their cupras
, there are also a few S3's kicking about running stage 2+ and he's quite active on the audi forums so maybe try them. i know from experience his k03 maps are very competitive with the revo maps. and others dyno's back i up. very similar.
his offer at the moment makes it a no brainer. when the offer finishes they are similar in price and performance so it'll be a harder choice, of which id doubt you'd be dissapointed either way
his a username on here Shark_90,
