Hi guys, I’m having an issue where my Ruckus is pulling back (almost like break checking) on it’s own at 32 MPH on flat and 36 MPH downhill. Does anybody have ideas as to why?

I’ve done the following to try to address the issue:
-Checked to make sure the airbox is set in place
-Added the rolling wrench EVI performance CDI/ coil thinking it was the restrictor (now I don’t think I’m hitting the rev limit for this to even kick in)
-I added sliders in the CVT thinking I wasn’t getting the max potential out of it
-Swapped the spark for an iridium
-Swapped out the fuel filter and fuel pump
- swapped the fuel like coming off the pump as it had some cracks
- Reset the ECM data
-Changed the oil/ cleaned the oil filter
- Changed the coolant/ cleaned the radiator

The bikes idle was consistent before adding the EVI. It now fluctuates when cold and will stabilize a bit once it’s been ridden a few minutes.

Next on the list is to check the carb. Any suggestions as to what my problem is?

I have a tach and I can record RPMs if it’ll help. Any suggestions are appreciated.

 

Its only a 50 cc engine