If a system is really going to self tune then it will need to run simulations in order to figure out what the best AFR is at different conditions. The only way that can happen is if the system is drive by wire. I don't foresee this happening any time soon, if ever. I'd be surprised if the aftermarket ever creates a true self tuning system but who knows, maybe someone will figure it out. The AFR map has to come from somewhere. Today it comes from the tuner's experience. Tuners know how to run open loop tests to see what the engine responds to. EFI systems do not have the ability to do any of this work and they won't until someone adds AI and DBW and maybe other stuff.
