here we go again with the no/wont boost issue

[rustest86]

i had just finished with the same problem 2 weeks ago and now its back, but now everything for sure checks out good or has been changed. and now its weirder than before,last time i had the O2 sensor wires burn on the sensor.i drove down to the local parts house for a new pads for my truck..... boosted fine there. go to leave and go home wont boost...... that quick, it runs fine otherwise though.

parts ive changed/new parts:fuel filterfuel pumpspark plugsO2 sensor

parts ive tried:CASMAFECUanother O2 sensor

ive also reflashed my emanage and checked the timing. im just at a complete loss here. the fuel pump fixed my problem last time along with fixing a leak before the turbo. but now i know i dont have any leaks and the pump is new.

any help would be appreciated....... im begging now

[rustest86]

it started running fine and boosting again today?!?!?!? im really confused now, but im not complaining.