I pulled my 2008 Nismo out and noticed the oil pressure gauges maxing during aggressive acceleration. Did an oil/filter change and replaced oil pressure sensor but still have high readings. It is running normal, no smoke or bucking. Does the pan have an oil screen that may be clogging? It did sit for a year.

 

I too am having a problem with high oil pressure readings. 2008 Z very low miles ... it's in the shop right now. Keep ypu posted.

 

I ordered a gasket and a over pressure valve. Have not yet done it. Probably Aug 8th weekend.