i am new to motorcycle, i know a little about them, but i have regular engine building skills, and other auto repair, so it help.
ok, i have a 1995 cbr600f3, i bought it thru my friend, and it been hell and back, i repair a lot of part, bike was wreck, straight to a tree at 60, luckly, that the main frame is in good shape, other scratch. it have a beat to hell yoshi on it, look like someone took it off and beat a car with it, but i can't really afford it right now. my friend have a k&n stage1,2,3 jet kit, and he was going to sell it to me for 20bucks, and hell yeah. but here's the thing, i read on the manual, it said i don't have to take off carb to get to jets. and i'm not sure what kind of jet i can use stage 1 or 2 or 3, my bike only have a slip on, and nothing else done to it. will it be ok, i go to 3? or i should stay with 1?, and i was planing getting new pipe, thinking about DnD or yoshi. which 1 better, i know DnD is very loud, and i do like the sound of it. any idea?