I finished my cp3 conversion yesterday and what I can say is:
First I Bleeded my input line to the pump. To make sure there is no dirt in this line, which could happened while working / cutting.
After a good amount came out, I connected it.
Then I bleeded the line to the fuel rail.
Which took a good time, till fuel went up there.
Connected it and then I let run the tank fuel pump for an other 4 minutes.
cranked It and it came after not more than 8 seconds.
Already pushed over 2700bars with that pump. So I think it’s good.
the first thing I notice with that pump Is: the car starts faster. Not much. Maybe one or 1.5 revolutions. But it does. Which is kinda cool. So instead of 3 revolutions, it takes now about 1.5-2