So what's more important? HPOP or scan gauge?

I wouldn't call either one more important. The Scan Gauge will display the information you need to tell if your HPOP is doing it's job..

So do you have 3 or 4 gauges? Cause I could do one or the other and pyro and boost. Or all four? Just trying to figure out what is the best

-95powersmoker-
Do you think the aeroforce is a good scan gauge?

I have 3, Pyro, boost and tranny temp... If I had gotten a 4 gauge pillar pod, I would run a scan gauge in there as well...

Yep. Definitely a good gauge that does a lot.

Most important gauges...

1. Pyro
2. Tranny temp (auto)
3. Fuel Pressure
4. Boost
5. Exhaust Back Pressure
6. Oil Pressure
7. Water temp
8. Oil Temp
9. Rear Diff Temp
10. Volts...

I could go on, but that gives you a good start.

For your truck I would go Pyro, Boost, Fuel Pressure and a Scan gauge.

A HPO gauge is not a good choice in a "gauge" watching the HPO pressures only gives you one piece of the puzzle, without the other piece you cant complete the picture.

HPOP and Duty cycle go hand in hand. Scan gauge will read both, at the same time.

Y do you say fuel pressure over the others?

if your fuel preddure is low it causes low power and can destroy the injectors.

What is the electric fuel system you have?

one that i built using a stock SD pump