I am still learning to jet my 250r as well but I think a good starting point for you might be 158 on the main possibly 160. You are getting more air in with the box open and the reed cage, the pipe in my opinion isnt doing much for you though, prolly chocking it on the exhaust since I think the fmf is kind of a stock clone. For you pilot follow these instructions. http://www.duncanracing.com/techfaq/...-jetting.phtml
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86 250r Project
1.5mm Overbore
Stage III port job by Brown Performance (Anyone Heard of them??)
Titanium Rod from a CR250
ESR TRX 5 Pipe
Twin Air Filter
Shave Head, doing absolutly nothing as the piston seems very low in the jug.
Current State: Trying to figure out the damn jetting.
Soon to be added mods (when cash flow permits):
Air Stryker carb
cr250 V-Force 2's (if the guy I found still has them in stock when I get the cash)
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