My dad has a 2001 yamaha FZ1 and recently installed the Dale Walker Holeshot jet kit with timing advance kit. After the work was done the bike ran poorly. (sputtering and idling fairly rough, really only running okay at the top of the rev range) It was taken to a shop in Abootsford and they synched the carbs and installed larger pilot jets to work with the jet kit and it still runs poorly. If anyone here has experience with jetting a FZ1 and could help out that would be great. Also the bike has a yamaha YRS slip on to work with the jet kit.
Also if you don't have an exact answer, if you could give me an opinion on who really knows how to jet and properly hop-up carbs with serious experience that would be greatly apprecialted. Thanks alot.