Originally Posted by Jeff@topgearsolutions
I think you missed his point.
The intercooler is not a good control.
This is because depending on the amount of heat soak it has incurred throughout the day, ambient temps ETC it will still vary.
A much more simple control is simply IAT temps at the pre turbo inlet.
If you follow identical warm up procedures, with similar weather conditions, then the data is just as useful. I sincerely doubt anyone is going to install a thermister pre turbo.