Oh you are thinking about engine oil temperature. I was referring to coolant temp. As you can see in the log, those are two separate parameters. Most people only pay attention to oil temperature, because you cant read the coolant temperature unless you use MHD or similar. You will also find that the DME pulls power at different temps depending on whether it is coolant or engine oil. I am sure you already know this, but I have found the tables for others to read below.
For maximum power we want cool coolant, cool iat and hot oil. Whenever I have experienced power reduction on track, it has always been due to coolant, not iat or engine oil. You will also find that the M2 and even the 1M has extra coolant radiators compared to 35i.
As of 2019, I now I have an extra coolant radiator and two larger engine oil coolers, so I am looking forward to see how those perform - I just haven't had the chance to do extended testing yet. I had to get the extra auxilary radiator custom made, because neither CSF nor others don't offer any N54 solutions that I know of.
Coolant:
View attachment 24254
Engine oil:
View attachment 24255
I wonder how high the IAT can go before you loose power? As far as I can see in my logs, I don't loose any power, even I am now running a smaller 7in FMIC and IATs peak at +160F on track in hot weather. Maybe CSF has some data on this?
