89 ranger 2.3t problems

[BoostCreep89]

ive swapped a 85.5 svo motor in my ranger 3 years ago, all stock except 42lbs injectors 3'' leaky homemade downpipe and fmic with 3'' piping, ran perfect for two years... it has sat for about a year until i could trailer it to my new home... in the past month ive put ranger rollar rockers/cam, ebay header(donot recomend), stinger 3'' downpipe 3'' straight exhaust,plugs wire ecu( never put the firewall bung back so rain leaked in) new tfi, new coil, cap n rotor, fuel filter, pcv valve, timing belt and radiator hoses.... truck starts right up, idles smooth then when it warms up if i touch the gas it shuts off... cleaned the iac, have a fuel gauge and pump works but doesnt hold pressure, i do not have a coolant temperature sensor, the tps is from the ranger which ive been meening to change so i can adjust it, and im planning on putting 255lph pump(will a 50galph pump be the same?).... any help on y shes doing me wrong???

 

[n_grimm]

Could check the VAM in case it is stuck. If you take the plastic cover off you should see the lever move. As the gate in the VAM opens and closes, it signals the ecu to go leaner or richer so anything related to that can cause problems. Plus any leaks that allow air to enter the intake without passing thru the turbo and therefore the VAM is a problem. You may have already solved this so just throwing it out there.