Snail Oto

just finish putting my turbo kit all together got my ecu chip running on crome everything is fine idle fine no CEL but the only proplem i have is when i start it up and let it wram up for a min or so then the car run really strong doesnt hesitate but when it fully warm up then it would hesitate in boost i know i have to tune it i dont drive the car much maybe once a week just to curise for 10 - 15min but i want to know what would cuase that propem running too rich when fully warm any help would be great