Oil cooler question

[flyinlow]

Its been raining non stop in Ohio and I wanted a fun little project for the Charger, so I got an oil cooler for it.

Jegs sandwich adaptor with thermostat ,two an8 braided lines 2 ft long, and a B&M medium size plate super cooler.

Engine has 35psi warm idle , 65psi on the road with a mechanical gauge . Run the factory electric gauge and idiot light now normal road pressure is 5/8 ths.

With the cooler oil pressure is very low. idiot light flickers at idle and the lifters got noisy.  

Hooked the lines together ,bypassing the cooler, the oil pressure was back to normal
.

Do you need a header style cooler for the engine oil?  Bigger flex lines , AN 10 ?