Well, I finally got around to getting the Ute tuned the other day. I ended up going MAFless with a VCM OTR. Went from 179RWKW to 217, and I can definitely feel the difference. I also got my Holden strut brace fitted and my calipers painted. According to the guy that did the tune the clutch feels weak, so that will be the next upgrade. The next restriction was the cats and apparently the exhaust, whilst custom, is not that great. I'll try and replace the cats one day, followed by the cat back later.