09-02-2006, 11:17 AM
It's fine to switch fuels, but you will need to re-tune for the different fuel. If you go up in Nitro content, you will have to richen slightly. From what I have heard, if you go up nitro content, you shouldn't come back down (Not that you would want to after seeing the performance gain).
I'll keep my God, my freedom, my guns, and my money. You can keep "THE CHANGE."