In low 80's, highest IAT was 187*.
In mid to low 60's, highest IAT was 172*.

Both of these peaks were with the engine at full operating temperature. I've seen lower peak IAT's when I've run with the engine temp right around a full tick mark below middle on the dash temp gauge.


I have the stock HE running a new Bosch pump with Needswings coolant seperation kit. I've never datalogged without the seperation kit, and have not done any logging with the kit opened. Plan on doing that at some point to see how effective the coolant sep. kit is.