Just how does this sucker work anyhow? I looked up some pages online and couldn't find jack about how exactly it works or what it does...

Obviously it's an additional injector controller, but what does it do about the other injectors already on the car? It has to notify the ECU or do *something* to compensate for the fact that there's 2 more injectors in there now... how does it do that?

Would it be able to replace an S-AFC, AND add two injectors? Or what the heck does it do and how does it do it exactly?

 

i just msg'd you on ICQ

 

It doesn't bother to tell the ECU about it. That's part of the beauty of an AI set up, you can make it boost dependent. You tune it using a wideband (or if you're a good physicist and can run the calculations to figure it out) and the controls on the Rebic to adjust pulse width, duty cycle etc. It's typically a completely independent system from the factory. This is how the HKS AIC works, so I assume the Rebic is much the same.