i got mine done 2 weeks ago by G-Force Performance in Gateshead. I have a pod type CAI and Hurricane extractors and 2 1/2" system. The tune was a MAF tune and he squeezed an extra 40 rwhp out of it.... it's not the amount of power so much as the way it now drives and accelerates!! it's an amazing difference! He disabled the gear change torque management or what ever it is that drops power in the engine during gear changes so now it actually launches when it changes gears under acceleration either in auto or in tiptronic. Plus the rev limiter has been changed from 6,200rpm to 6,800 rpm because he said it was still making power when it reached the rev limiter. Plus he said that in the VE when you mash the loud pedal, the throttle only opens to about 75% and slowly works it's way to full throttle..... now if i mash the go pedal, it goes to 100% straight away.
After it was tuned, i drove to Bowral and back along the Putty Road with a trailer on for a total trip of about 800km and got 11.3/100 out of it!
Highly recommend G-Force. Great job!