Ya don't say lol can't diagnose anything if it don't run. I'm a jet engine mechanic also so I know a think or two of troubleshooting which is why I'm doing as best I can to learn this system and figure out what is going on. I don't need a smart a$$ stating the obvious.
With the right scanner or scanner software on a laptop combined with knowing how to read the info,you can diagnose almost every problem without it running.
Have you done the simplest diagnostic that ive asked you to do yet? Check the valve cover harnesses?if you got melted injector wiring you gonna fool around throwing parts at it and burn up a thousand dollar IDM.
Now that you replaced the ipr its gonna be a ***** to start.you have to crank its balls off till you get rid of the air in the system then it may still start hard or run funky for a bit.but if the injector orings, i asked you to pull the valve covers off to do a ****** inspection for oil bubbling up around the base of the injectors,are gone it may never start.