The cam gears have been diagnosed as failing so I'm just about to order replacement gears and OCV solenoids to sort out this issue.
I've got the 100,000km service coming up so all other mods are on hold till this is done and dusted.
The MSR tune has been fantastic to date. No CELs, good economy on cruise and whenever I've checked the tune it's been fault free and pretty much spot on.
The only other thing I've done recently is insulated the Cobb intake box. I got a piece of NSL foam off 3rspecb. Thanks G!
It's this stuff: http://www.pjbowers.com.au/nsl_foam.html
I've blocked off the area where the intake resonator used to sit, as there was a gap which was was drawing air off the headers. This in turn seemed to be causing IAT's to be a little higher than normal.
The insulation of the intake area has seen lower IATs and a lot less induction noise. The pod filter is still noisier than the stock box, expected, though now it's a lot easier to live with during day to day driving.

sounds good.