I got the guy who rebuilt my inj pump to put the ute on the dyno and tune it to 550, I have been told you can go to 600 but playing it safe at the moment. He got higher temps at 1500 revs then it dropped until he went over 3000rpm. I was surprised when I first got my pyro guage just how quick it goes up to 500! Im interested how much a better intercooler will drop the temp? You need a dyno to play on for a day so you can change boost and fuel and get the right combo.