hi i have a yfz 450 2007 sport quad... i wanan get some new exhuast its just slip on mufler.. well anyways someone told me that since its a 4 stroke if i got a new exhuast ill have to rejet the carb. everything on it is stock so i wanted to get a vardine slip on exhuast.. do i new to rejet the carb or is that just with a whole new exhuast system not just the mufler..
dont know if u can help but thx for ur time
