02 viper with boysen reeds

yamaha621

New member
Joined
Oct 22, 2008
Messages
34
Age
40
Location
illinois
hey guys I just installed Boyseen reeds in my sled and it recommends that I drop the main jets between two and four sizes was wondering if anyone else is running these reeds and what you did ... thanks ahead of time
 
Well, i'm running those on my 800 REV and left the jetting where it was and it runs great. (I actually richened it up a bit, but that was due to other factors) They also recomend dropping a size or two on the mains for my sled also, but I was a bit leary of doing that. I guess you could try staying stock and check your plugs and wash and go from there, thats what i would do. I'm willing to bet you'll probably need to tweak the mixture screws a bit too.
 
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