N14 celect plus erratic idle

[Luckyjayb]

Just did head gaskets and replaced all 6 injectors on a n14 celect plus. Ram the rack and all set to specs. When at idle, it has a erratic idle that varies from 650-800 rpm’s. Rom is set at 700 via insite. When doing the cutout test via insite, it’s a smooth idle but stop the test and it goes back to being erratic. Everything seems to check out perfect on all the tests. Fuel pressure is where is should be per Cummins specs. I’m at a loss of what could be causing it. Any ideas or pointers on what to check would be greatly appreciated. The only live data that’s throwing me a curve ball is the ambient air pressure in right but ambient air temp is staying a constant 40 degrees.