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bonito

2011 Beta Evo 300 4T not running right

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7 hours ago, bonito said:

I have installed the Jitsie mix screw, and since I tighten the carb it has been running great. 

What a pita to get to the carb, holy cow  what an ordeal to get to it.

Only thing I wish was a bit more grunt from the exhaust and maybe a wee bit more power. Need to look for a muffler, hope they still make the Bosi titanium one. 

Dose yours have the race cam?  I heard that and something like the Bosi make the 300 4T output a lot more power.  

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3 hours ago, jonnyc21 said:

Dose yours have the race cam?  I heard that and something like the Bosi make the 300 4T output a lot more power.  

Don’t think it has the race cam. Bike looks pretty much stock. It’s super quite so a bit more grunt would be nice. 

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I found that the needle position made a big difference to the low end grunt. Mine run's best with the clip almost to the bottom of the needle. (#130 Main jet)

 

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