I thought it was about time for another little update.
Boost is now set at 1.5bar, the diesel geek short shift has been removed and replaced with a JBS short shift, the standard rear ARB has been replaced with an 19mm R32 item.
I'm now using the car everyday and as expected with what is essentially a new engine it has used a little oil, however fuel economy is much improved and I'm now seeing a calculated 22-23mpg which consists of various types of driving including frequent blasts. The latest map has also made further improvements to off boost driving and the car is happy to be driven at 2krpm which I believe is one of the major contributors to the improved economy. Also due to a tweak of the secondary air pump cycle cold start is very good and the car is ready to be driven off within 30-60s of turning the ignition. The new JBS short shifter does exactly what I wanted, easy to engage, precise feeling and shorter throw and reduced side to side movement. As for the ARB I've not done much driving on the twisties yet but it has definetely improved things on roundabouts.
Performance wise the car is quicker than ever and has a very usable powerband (boost now comes in below 4krpm) allowing overtaking manouvers of several cars without having to change gear. I've not had the opportunity recently to compare on road performance to anthying significantly quick but hopefully the opportunity will arise soon.