Sounds like you need to fully warm the engine and chassis before final tuning, get it warmed up before you tune because it should start up a little rich and get to the final tune when everything is at temp.
Guys try and tune cold, then they will say "it needs to cool down" and that's total BS, you should be able to run all day on a good tune.

http://************.com/ncforums/vie...hp?f=97&t=1581

RCU has determined because of ONE GUY that was a member of my forums for one month that I can't post links or type my forums name in their forums, I'd love to further help you but RCU does not permit that.[:@]

That was at least a year ago, and I've tried to get the nitro carnage name reinstated.