Unless you’re seeing coolant above 242F and oil above 272F, IATs are more important to focus on to keep power levels up. Those engine temps are when the ECU begins to pull power.
However, timing begins to be pulled above 105F IAT, which is easy to hit. Speaking of IATs, I know someone with the new Evo 3 Comp on their M2 and the data looks mighty impressive.
He’s doing more testing and I won’t spoil the unveiling for him....