Hi
I am working on a 6.0 swap chevy 3100 truck, stock ECU out of 05 GM truck with painless wiring. MAF sensor was deleted and all the codes were set off and MAF failed. The car runs decent for half a min then starts to shake and does not pick up throttle then dies. I noticed it backfiring into the intake as well sometimes and its struggling to keep running.
Its my friends truck that I am helping out with the tune. I have forced it into open loop and disables O2 sensors since he cancelled them. So the car basically has no MAF sensor and no O2 sensors.
He says it used to run good but did not pick up throttle at all and another tuner tried to fix that but actually got worse (car dies). I managed to get the throttle to work and pick up RPM's for short time but can't figure out why its struggling to keep idling or keep running.
Lastly, it's mechanical/cable throttle body not drive by wire.
I have attached the tune file and some logs for the issue we're facing. Is there anything I am missing out or done wrong?