I have an 02 Yukon I need help with, I'm running a whipple with relocated IAT, MAF still in place(Disabled). Occasionally in the morning it will start then stall, reduced power light will come on and it won't restart until the codes are cleared. Code 1514 is stored. I don't have a log of it happening yet, as soon as I can catch it happening I will post a log file. I've read a lot about the reduced power light, but in those instances it seemed to be when the people were driving around, no mention that the car/truck would not run after the reduced power light came on. Any help I can get would be appreciated, if there is any additional information you would like me to post I will, thank you -Phil