KDXRIDER.NET

ok, im not sure which mixture is best for me, 32:1 wasnt as good, 36:1 is a bit better. i use hp2 synthetic oil
i have:
factory jetting {not changed}
removed snorkel
fmf powercore 2 silencer
when i removed the whole airbox lid, it would bog out down low, the have an improved hit in the middle. was the bog due to jetting?

A bog is a sign of lean condition. Removing the lid does help get more air in so it does make an overall lean change. There could be many other things to consider though, considering the bike is 5 years old. Air filter condition (ripped or not sealed), carb condition, reed condition... Asking a question like "would a bog be due to jetting" is pretty open to speculation. A leak between the carb and reed cage makes a great lean condition and that is NOT jetting. If the carb still has the factory jetting and ran perfectly before the lid was removed then I would think that yes it would need a jetting change now to compensate for the mod.

As far as ratio, most run 40:1 but 32:1 won't hurt anything nor would 50:1 with the correct high quality pre-mix

There is no "correct, best, proper, ect" ratio. As bradf stated...there is a range of ratio's that will work fine.

The key is to pick a ratio...then jet the bike. Changing the ratio to attempt to correct a jetting issue is not the way to fix a JETTING problem.

I have a 2006 200 I removed the lid (did not like it) put it back on without the snorkle, much better and run 40:1 with stock jetting but i run motul oil. But every bike is diffrent so you need to try diffrent things to make yours run the way you like it.

40:1 is a good place to start. 16 oz of oil in 5 gallons of gas, nice and easy to remember.