Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Already looked it never would go into open loop. Always stayed in open loop fault. Also used functional test to put it in open loop still horrible lack of power.
Plus after that I unplugged both upstream then wot it still garbage. Then unplugged maf still no power. I’m going to redo the injector balance test cold see if they come close to what Ben said around 23 psi for the drop pressure. Tested fuel quality and pressure. Exhaust back pressure. Next want to check cam crank relationship and map sensor because of the strange reading at idle of 2.5 volts
