Originally Posted by
Team Chambers
Nothing I am aware of. Tune it like you tune any other nitro. I have 2 .24's and they were very simple to tune. Make sure to run 30% as they are pre shimmed for it.
What would be necessary to change if you are going to run 20%. I have been running 20% now on my fully modded .21 for about a 1/4 gallon and it seems good.