It's become pretty apparent that I need to install an engine oil cooler for HPDE use. After 10-15 min of track time, the oil temp gauge is at the very top of the normal range, by 20 minutes, it dips into the yellow range. At this point, I've noticed the boost getting cut back under WOT, from 21 psi to about 10 psi. The first time it happened, I assumed it was just heat soak on the intercooler (although I have an aftermarket IC that is three times the size of stock!). When it happened yesterday at the track, I was able to do some testing. If I back off for a lap or two, I could bring the oil temp back into the "green" range. Once the oil temp was in this range, I could get max boost as long as I wanted. But once the oil temp crossed into yellow, it would start cutting power (mainly above 5500 at WOT). It certainly appears as though this is a deliberate safety function of the ECU, similar to a "limp mode". Has anyone else experienced this? Or does anyone have confirmed knowledge that the ECU will pull boost based on excessive engine oil temp?