[spxxx]

I think the majority of issues are with the N55, there's several people on here who have run N54s with stock oiling systems very very hard (me included) without issue.

I did install a supplemental oil oressure sensor and noticed some pressure drops on long sweepers (forget which side there pickup is on) but never had a failure of any kind. I do know of 3-4 N55 motors that failed on track with much lower G-loads (essentially street cars at HPDE).