Hi,
My oil pressure in my IX is dropping from 100psi down the straight to 30 -40psi around a long fast right hander. From what I have read this is common with evo's.
It idles at 20psi.

Is 30 -40 psi enough pressure - at what pressure drop do you do something about it?

Any engine builders/track guys with some advice??

Also, anyone logged oil pressure after fitting the AMS sump or an accusump?

Thanks in advance.

 

Anyone??