Let me summarise this to date as I think this is becoming a little bit like trial and execution by internet! I am remaining totally impartial here as it is only fair! these are my points.

1. The pistons are detted above the top ring land. This damage will almost certainly be from excessive ignition timing. 14 degrees is in my opinion excessive at 2 bar boost and I would expect the engine to det at that amount of advance and Compression ratio. I would certainly say danny's map could easily have caused that det.

2. The pistons have fatigue cracks. These are probably not from dannys map. The pistons have no heat related failure that I can see. Only Det. Mahle pistons are prone to these cracks if revved over 8500rpm on std stroke. (safe rpm comes down as stroke goes up). A missed gear or an over rev condition is the likely cause, which is very common on 2wd high power engines.

The rest I will leave the children to bicker over.