Update: There is no update since I raced it at Castrol. The turbo setup has been working flawlessly for 9000km now, it's been such a great (fast!) winter daily.
Took it to waiparous yesterday for some shooting with some buddies, had it loaded up with 3 guys and a bunch of gear and was the only car out on the trail lol.
Also the water to air setup works amazing in the cold.