From reading through the posts in this thread I think there is some confusion as to how exactly this pump operates.
From my understanding, this pump (stage 1 for instance) will behave just like a stock cp3, but when the truck is under load, from just off idle to redline, the pump will not lose pressure due to the long duration of the TST on a high setting or large injectors. It will not be able to be drawn down to less than 20,000psi under full load, where as a stock cp3 would lose up to 12,000psi of pressure under the same conditions (TST/injectors). Your CP3 has many internal flow enhancements that increase the flow volume thus allowing the cp3 to maintain the 20,000psi with less work. Am I understanding this right?
I think the "consistent 20,000psi... from just over idle to redline" and "20,000psi is minimum after idle" statements have a lot of people (including myself) confused. Please clarify it for us.