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Dustin@Dynosty, No offense taken.
My post was more in response to the post after your's where the same question you asked was posted again, with little additional information nor an extension of the original question.
Additionally, when it comes to ecu brand, the box itself can do a lot more than most people think it can. It all depends on how the end user wires the box up and sets up the software. I have done some out of the ordinary stuff with AEM's, Motec's, Pectels, etc... and it all depends on how creative you get with the software and hardware. Given, you might need to add an external power stage or signal conditioning circuits here or there, but one can usually find a way to make it work.
Same thing with this project. When it comes to the AEM EMS, I have pretty good idea of what it's capable of and I know what's needed to have a properly running DI system. I have an idea on how I'm going to do it, but until I actually do it and see if it works or not, one can't say, "yes it works" or "no it doesn't." Many people throughout history have said "You can't do that" but many other people have proved them wrong.
In the end, maybe I can't get it to work, but a least I'm going to try. That's the whole point of R&D, start with an idea, build it, test it. If it works, great, if not, find another way.
And as far piggybacking ECU's, again, it's all in how the end user sets it up and tunes it.