ckolloff

So I've had this truck for awhile and I've just starting to get educated about it's performance potential before doing any significant modifications. As I'm reading the posts here I've come up with a few questions. Any help is appreciated.

What are delivery valves? I'm guessing fuel delivery valves, but are these in the injection pump or are we talking about intake valves in the head?

When people talk about AFC, what is that? From reading the pump mod article in the tech section, I'm guessing it stands for Automatic Fuel Control and limits fuel relative to boost pressure. Correct? What else do I need to know?

I have a '98 4x4 12v with auto tranny, can anyone tell me what injection pump I have?

How much power can I make with the the stock turbo and still be able to tow 10-15k lbs without egts being outta control?

Thanks