Yeah, probably should have mentioned that it had zero time on the clock Until the thermostat opens, the computer is operating in a warm up mode. Mine does not like it when it is cold either. I only have dyno time on the motor and I keep unhooking the battery. Therfore, it has not gotten a chance to learn. It should get better with some drive time. Some good EFI info: http://webpages.charter.net/darrell1/mustang_efi.html Micah
