Before beeing so loud and responding to some one who is tracking his n54 for more then 10 years, even in competition, you should better understand my suggestion. Anyhow, decode those nannies as they do not have sensor to feed those nannies, just mathematic assumptions by the DME. And good luck with your route..
Uhh what? First off I didn't even talk to you so what do you mean understand your suggestions?
Next off what are you talking about? Decode what nannies? Oil temp and coolant temp "nannies"? You do realize those are based off of inputs coming from an actual oil temperature and coolant temperature sensor right? They are not mathematics assumptions by the DME, when temperatures that are inputted by real sensors reaches a limit threshold the car hits limp mode. Maybe you should familiarize yourself with the issue.
What I brought up was valid based on my initial assumptions from prior discussions, oil limp = 270ºF and coolant limp=245ºF, and since I saw oil temps hit 270ºF first on track with a tuned and stock m2 then coolant passing over next I assumed limp was due to oil. But what I did not know was that my prior knowledge was incorrect and the car did not pull power until much later after 270ºF. So know I understand why
@martymil was not experiencing limp modes with his stock oil cooler, and I apologize if I was rude to him earlier (although nothing I wrote was there to intentionally bash or be rude towards him I just thought maybe he was not driving hard enough to get the temps high enough or his laps were too short). And thanks to this thread I am able to improve my knowledge on when the car actually cuts power and adjust my build accordingly to better deal with coolant temps. Also thanks to
@Asbjorn for staying firm with his coolant assertions and steering me in the correct path in learning - that is what forums are for, to teach you what you did not know or correct prior incorrect knowledge through discussion and debate.
Finally I have not driven a bmw for competition, but I am well versed with tracking cars and for a short time competing in time attack events (stopped because all of the good contests were many provinces over and driving to those events were a huge hassle) with Japanese cars so I am well versed in battling temperatures.