My RRW was set up with a Dynojet kit by Rhencullen at Mallory Park on their dyno. Since then i have fitted a full titainium Akropovic system with a carbon end can instead of the standard downpipes and a stupidly short race can, it still retains the K+N airbox filter. At the moment it is running 126 mains, should i be in touch with dynojet for some bigger jets. The plugs looked a little lean when i took them out, but i know you cant really tell by that.