hi

got a 05 ds650x k&n filter lid off 185 main jet yosh exhuast 40 rear 15 front sprocket procom cdi box will only wheelie in first gear no other gear dose about 85 flat out there is just no bottom end dose anyone no why could it be the rev box had carb cleaned out and set up had compresion test down its about 175 so ok there plus nice brown plugs
please help thanks

 

what does it sound like? does it miss or backfire or drag / lag anywhere on the throttle? put the air box lid on and try that to see what the diff is. Does the quad act ok from all points of RPM's? (watching the tach)

 

If you are still stock carb, they really like the lid on. Try the OMR stock carb mods, that will most likely help. Also, if you are a "bigger" rider you may need to lower the gearing some more