I own a 02 9R and have a Yosh RS3 Ti slip-on. My question is which jet kit do you recomend. I have heard that Factory makes an awsome kit that works excellent with the 9R.I Also have some people saying that Dyno-Jet kits are not the way to go with the 02-9R. Do you guys feel that a K&N filter is a must have when jetting your bike? Can you tell me what to expect from" the seat of the pants", after installing a well sorted Jet-Kit. Also does the bike get louder starting around 3000-4000RPM. My buddy had his 7R Jetted and I noticed that the bike was definately louder coming off idle. It now has quite a ripping sound trough the rev range,it sounds great!!