[mike the snake]

I have a pretty good idea how port and direct injections work.

What I'd like to know, or have explained so I can visualize, is just how our hybrid PI/DI works.

Does the car run solely off of DI until a certain RPM or load?

Does the car run off of PI until the DI is needed?

Does one, or the other chime in intermittently when needed?

I'm hoping someone can splain this to me so I can at least visualize how and/or when these two injection systems work together, and when one or the other works alone.

I assume the port injectors are used towards redline since it is the port injectors that are increased in size when tuning for big power and E85, but I don't know when the DI is utilized, and what exactly it is good for or better for compared to PO.

Thanks for any help.

Mike