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Message: [QUOTE="Charles, post: 1329582, member: 103"] He's talking about changing not the variables Ford wrote in, but the functional code itself that is running the engine. And yes, it's doable, it's all in hex as far as I know. And no, nobody at Ford is going to care what 5 people do with a 7.3 now or ever. I wrote code that totally bypassed the PCM one time and ran the fuel delivery from my own code on a stand-alone piece of hardware put together, installed and run in a race truck by others. It was so nice KNOWING what the fuel was doing. It would be much easier for me to make my own PCM than to reverse-engineer theirs if that kind of time and effort were available, and I still cared that much. I'm now sitting here wondering if curiosity and desire to have what I want to happen actually HAPPEN when I say would ever motivate me enough to build my own PCM.... It's possible. The PCM has an easy job. Dead easy. It's the IDM that's tricky, and integrating with it has already been done and the code is sitting in my file cabinet right now, lol. [/QUOTE]

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