[Tomzilla]

Hi gang,
I'm trying to help a friend with his '93 Coupe. At first startup in the morning he says he feels a "miss" . I haven't experienced it myself but have driven the car after it had cooled for a few hours and it doesn't do it. According to him he has to feather the throttle initially to keep the car running until the temp comes up. After the temp gauge reads 180 it runs fine. My assumption is something is causing the ecu to lean out the fuel until the car goes into closed loop. He has recently replaced the o2 sensors with no effect. I replaced the IAC and EGR and am hoping this cures or at least diminshes the effect. After scanning for codes the only one that comes up is 33 which is egr..........
Any ideas are appreciated