had my 1.6 remapped (not revo).. made a noticeable difference, in performance, economy and driveability, but it has had other work done to it. Not bothered to put it on a dyno so no idea wot BHP it producing, (not really interested to be honest) all this I got half a BHP more than u crap is a little sad really...
I've got another head & inlet manifold which are being reworked so after they are fitted may get a stage 2 remap.