Spits and sputters on take off

15 800, no engine mods, spits and sputters on take off, it doesn’t do it all the time, but mostly when the engine is cold or after sitting for a half hour or so. It doesn’t seem to do with when warmed up. It sputters like a carbed engine when it needs more choke, like a lean condition. There’s about 2,200 miles on it, and the spark plugs have been replaced.

It’s out of warranty and I guess I’m going to have to start shot gunning parts. I’m thinking some type of temp sensor.

I know someone posted the same issue a while back, but I’m not sure he found the problem. Help me out.