| PC III is the way to go. i just had one fitted to my F4 and it picked up 8.3 bhp at the wheel and its super smooth also it comes unmapped like your 'r' version - all u need is a clued up dyno guy with the latest software and your there, a map for your indvidual bike ! then get it home plug the thing into your computer and you can download the settings so if you get it remapped with say different cans on u can swap the maps yourself cost is about £285 for the pc and about £100 dyno time |