im fine through all the gears eccpt 6th once i get past 3/4 throttle it stops accelerating. i do run with no lid but its faster topped out in fifth so idk y its like that. could it be getting too much air? but if it is why is it fine through the rest of the gears and its annoying cause i know im faster but it is slowing me down.

 

mine used to do that stock with no lid until i rejetted it, it would bog and have no power, u need to put ina bigger jet, try going up 20 or 30

 

ok thanks im just gunna wait a while cause im not familiar with jetting so when i get my trenga kit im puttin a big one in or what ever it comes with

 

i have heard removing the lid completly flattens the top end and it is better to drill holes

 

yah i drilled holes in mine now i hoze all the lil 250ex wannabes in my area. lol