no idling , heat cycle while driving very easy , do not let the engine hit the powerband the first 6-8 tanks . fire it up run it around at 160 for a few min. , then cool it with piston free , run it around at about 200 for a half tank or so , let it cool , run it around at about 220 for 4-5 tanks gently with no powerband !!!! check temps frequently to maintain constant temps, temps will jump all over the place with a new engine . richen the needles back up put a new glow plug in (wether its bad or not)and go out on the track and sneak up on "the race tune" , recommend finding the local tuning guru to get you completely dialed in !!!
theres actually a little more involved than what i have posted but would make for a very long article
refer to ron paris nitro bible if any more q's