I am finishing up the pump feed lines on the G.M. Performance Parts Dmax dragster , and I want to go from one pump to the other to balance the rails . I have the 22 inch flexible lines from Industrial Injection. I am driving the pumps at 50% speed to keep them from exploding after a 6000 ramp up. From time on the test bench the pump lose 40 % of their flow after 5000 rpms