Motor blew up today.....need some tuning experts in here.

[Fast355]

I am not sure what mechanicman is getting at with the MAF and MAP signals. I have never tuned an engine with a stock throttle body or an air cleaner that did not drop below baro as the rpm climbed nor have I tuned any engine that had steady maf/map signals. They ALL bounce. Dodge 4.7/5.7/5.9, GM TBI, TPI, LT1, Vortec, LS1, 3100, 3400, and even my 2012 Titan thats been tuned since 2,000 miles. Gotta remember the engine runs in big pulses as the various valve open and close and the sensor reading multiple times a second record thes pulses.

I would be more inclined to believe he has an issue in the VE table thats causing the PCM to run lean after AE times out. It also helps to bring PE in sooner than the OE 90% and bypass the delay by lowering the delay rpm.