Nige, There was a guy that used to post on here that was working on custom maps for the 4V Dukes - from memory he's Newcastle way and I think his company is 'Turbopac's' ??? - could be worth checking out. I met him at Croft a few times last year and he was really knowledgeable and friendly. * Spag headers - sorry mate, mine are now on the bike ready for MOT tomorrow (hopefully) - just as well you didnt measure them as they didnt fit spot on and needed quite a bit of persuasion!!! Good luck - Frank |