I have a 2004 5.3 that is stock except for a LS2 cam. I'm setting up a engine run stand for it and have acquired a ECM/harness/MAF/etc. from a 2004 4.8 along with a LS1 intake that I'll probably use after I decide what I want to do with the engine. I'm assuming everything will work together. Right now, I just need VATS removed from the PCM so I can start the engine on the stand. I'm not sure if I need to do anything to the PCM to compensate for the cam right now.
I'd like to find out if I should consider buying a scanner/editor and software now and do everything myself or just have VATS removed somewhere and deal with the other stuff later. What's available that's not VIN locked that I can do all this with using a computer? Thanks