Hey Daz.
No mate. The only upgrades I have are the CC intercooler/scoop and a JPC high flow water pump all with a good tune.
But,as per my previous post I am watching the thread with much interest!
Also, I will add, the CC intercooler tamed the EGT's big time and gained a couple of ponies with it too. Pricey, but good investment.
Have you also considered a bigger air intake ?