I am guessing it adds more fuel when running hard?
I agree with 50% of that.Michael, I highly doubt one could chill the fuel enough to effectively eliminate sub-atmospheric boiling. The specific heat of diesel is too high to have a cooler as small and light as a lift pump be effective. It would take something much larger and/or complicated. There's a reason it's been negated via pressure instead of temperature for all these years.
Huh? I could not disagree more with this statement.Not exactly.
The only thing a lift pump does, is provide pressure above atmospheric to give fuel a higher boiling point. This decreases the vapor cavitation that the CP3 otherwise experiences from boiling.
Chilling the fuel would have a similar benefit.