sheet metal intake...

^^^ I dont think EFI gives a rip what temperature the intake is, it bases its calculations on the intake air temperature (IAT sensor) and MAP, then it meters the duty cycle of the injector right above the intake valve. In a turbo application, your going to be running the IAT a little (a lot) hot due to the heat of compression, but that goes away when your not under boost. Your IAT's will fluctuate probably 70F from idle to 7 psi boost. In a carbed app, it may be more of a factor. I bet they run like crap in the cold under a carb.