XP_Slinger
They’re Just Saws
- Local time
- 3:17 AM
- User ID
- 845
- Joined
- Feb 9, 2016
- Messages
- 6,089
- Reaction score
- 27,557
- Location
- Central NY

Definite improvement in throttle response, but it didn’t feel any stronger in the cut. Hoping that when I do some grinding the carb will see it’s potential.Did you notice any improvement in swapping all the HDA-120 parts over to the HDA-199 carb on the 254XP? I know the 199 has a larger venturi, but since you didn't port your cylinder, did it benefit from the larger carb?