Hello, i was wondering if anyone can tell me what is controlling the computer to start commanding a rich AFR, 7.9-8.5 7 to 10 seconds after my truck starts on the first cold start of the day. Sometimes the motor will stall. I don't have a wideband to see how actual rich it's getting but the injector pulse width is going up at the same time the computer is commanding the rich AFR, I can also feel the truck starting to idle real rough while this is happening. It only last for 10-20 seconds before the commanded bounces back up into the 12's. I've just about given up trying to figure this out. I'm currently logging and tuning with HP Tuners, i'm going to try my EFI Live to see if there any other tables that HP does use that i can fool with. Any ideas would be greatly appreciated