Nytro xtx rough idle

[Marmaduke2011]

I've got a 2011 nytro xtx with an mpi 180 kit on it. When the sled is first started it runs on 2 then will level of and run on 3 after the throttle is burped. I was kinda thinking that I had a fouled plug, but wouldnt that cause it to miss all the time?
Thanks for any help