Can someone explain to me what is meant by the bypass spring opening up? When would it open, why does it open, and when it does why does the pressure drop? I thought under load the pressure is supposed to always go UP, not down some.

Also, I think I am going to try taking away a quart and see what happens. It is a different gauge from last year (Using an auto meter pro comp oil pressure gauge, but im losing faith in auto meter products as I have now had two brand new faulty gauges from them that I have had to send back) but the oil weight is the same as the motor I ran last year, although last year I ran stock volume with high pressure spring. Brian at IMM suggested I run the HV pump in this build, which is why I did