09 XP 154 Wont hold RPM

[winter brew]

Put down the bottle. The BD box on your carb'd doo isnt going to be much help.
Actually....a bit fat from "lean and mean" makes more torque....I always tune to the fat side.

 

[Original Tetonice]

I know that. speaking Big Bores in general not XP. If you read the comment more careful its owning a BD box or similar tool helps in that department refering to what the BD box is capable of doing EFI, SDI, BOOST fuel controlers....im not sure how running abit fat equals more torque.

OT

 

[Red-eye]

I always run on the fat side too, as long as the sled runs crisp I'm doin good. It's easier on the engine and gives room for error on me and the eng builder. HP increase is minimal running lean. Running right on or on the lean side is for fools who have lots of money.