relief system 14 is shown wherein an oil filter 20 is added after the oil pump 3 and the main gallery pressure feedback signal is applied to the first input p of an alternate design pilot valve 600 and the pressure relief valve piston inlet input 101 is supplied directly by the pump 3 output pressure similar to fig1 with its two pilot valves in fig1 the single pilot valve 600 is configured and ported as a four port pilot control and provides an outlet b which is supplied to the two way valve and the off side of the solenoid control member 400 and represents a relatively high pressure pilot u2018 b u2019 setting for the line 4 5 in the chart of fig1 and the outlet a of the pilot valve 600 is supplied to the two way valve on side of the solenoid control member 400 and has a relatively low pressure pilot u2018 a u2019 setting corresponding to the line 2 3 in the chart in fig1 the pilot valve 600 no longer includes a first piston but only includes the corresponding second piston 640 which has a top end including a hole 605 for receiving the gallery feedback signal pressure p and a branch 606 which communicates the same pressure p to a lower chamber 650 defined by the piston 640 and the bore.