I realise this a holy thread resurrection. But as I have been looking at the info/logs kindly provided by Bill and everyone in this thread I thought I would put in a post to say thankyou and post one of my initial sets of observations.
Firstly I have looked at boost compared between cars - note the S3 Stock comparison was done in 3rd gear on the road so didn't build boost initially as well.
Also the Revo 1 car of Quintin Rose which underperformed in terms of power was seriously underachieving on boost vs set-point - but with greater WG duty cycle than the Revo 2, so something underlying there.
I hope to make more comparisons in the future, but there are fewer logs with lambda/ign timing/injection time/rail pressure details available. So those will take longer.