A remap is an excellent first step to better/crisper performance on the VR. My old Highline was remapped by AmD and along with an exhaust and filter put out 202bhp. It not so much the performance figures, but the driveability which is greater improved, mainly eliminating the VR's awful sluggish pull below 3k revs. AmD charge around the £350 mark for a remap. Alternatively, Stealth Racing can supply a Dastek Unichip which is a fully reprogrammably ecu for the same sort of money. All depends if you plan to stop at a remap, exhaust and filter really. If you plan to mod further, ie Schrick Man