Ok, so i only get this issue during a coldstart (sitting overnight or an hour ish). So here's what its doing, when i start the rig everything idles good, as soon as I hit the gas it revs up and then starts to stall out, i rev the gas a few more times and it bogs and does a small backfire like sound and then starts idling great again. I can drive it around for hours on end or all day and it runs tip top, no stalling, bogging, nothing, just runs perfect. I can turn it off after it warms up and back on and nothing... runs great. Wait 10min start it up.... runs great. This only happens on a coldstart and after I rev the engine for the first time. No problems any other time. The engine turns over immediately (No cranking) so its not a fuel pump issue, i dont get constant throttle issues so i dont think its the TPS, i dont get black smoke out the tail pipe so i dont think its leaky injectors.... Possible IAC? But it idles fine at start and after wierd hiccup.... Possible MAP sensor? Looking forward to any insight on this. I have a OBD reader on the way to me. Oh and no codes pop for this issue. No engine alarms of any kind so my code reader is useless. Hopefully i can read values with the OBD reader to help narrow it down.