Well, it was a pleasure meeting you, let's go over the details of the car for everyone.
The thermal fan does come on all the time, mostly because the air conditioning is on, but also to assist in cooling because the fluid couple (buy a replacement from
here) is not working like it should. With the coolant at 93C the fan should be quite stiff to turn but as we discovered, the fan moved quite easily.
I suspect that alternator is a replacement and won't suffer the same faults as the genuine unit, but the idler pulley wants some silicone lube - that's the screeching sound.
Fuel rail pressure was excellent, peaking at around 25400psi and not falling away under constant load - a sign that the SCV is not causing the ECU to try going into safe (limp) mode. Boost pressures were exactly as expected, a peak of 19.7psi noticed so performing quite well.
Fuel economy average was around the 12.2LPHK which is marginally better than my car's 12.4LPHK - noting that your car is a couple of hundred kg lighter than mine, so yours is performing quite comparable to mine (and mine's just had a service with a new SCV, tons of injector/fuel system cleaner, new filters and fluids everywhere (even diffs).
All in all, the car's in great shape. The 2micron filter needs to be checked, the MAFS might want a clean, the EGR can be blocked with stainless steel and the catch can may want to be emptied. A fabicated tap-in-hose on the bottom of that unit would make it very handy indeed. Then it's a quick clean of the intercooler - now that thing might not even need it, you'll know after the first flush - and there's nothing left to do maintenance-wise.
The cores of the radiator might have an issue though, but it needs a radiator specialist. While accelerating from a standing start to 90km/h I watched the coolant temp climb from 93C to 97C, making me think that that fan wasn't working as well as it could be, but also that the radiator might not be flowing as well as it could. I'll repeat what I said to you in person here: don't do what I did.
When my radiator cores blocked up, I just had them rebuild my radiator. They took the top and bottom tanks off, replaced the cores, reattached the two tanks and reinstalled. I've subsequently had my auto transmission cooler disconnected and an external one fitted, which removes any risk of cross-contamination of coolant and trans oil.
I should have done THAT first, then replaced my radiator with a racing radiator - they've got aluminium tanks, and are supposed to be 30-40% more efficient than stock. Especially since we tow - and do it in the outback more often than not - cooling capacity is vital.
