Geoff - this controller is amazing. I could feel it working far better than the factory system with piggyback type controller I had previously. The rear diff was locking at a far lower speed - confirming the 4WD had preload and was ready to rock!
With completely worn out A050s (and I mean they were bald and had no visible tread at the completion of the event) I managed to knock 1.5 seconds off my best time from last year with no other change to the car (the tyres were new last year as well!). Final result - 5th outright from 150+ competitors.
Most competitors in the top 20 had either special compound hill climb tyres / or new super soft semis or slicks. I am confident new tyres would have resulted in another second or so of time reduction, however the race budget has taken a hit lately with house renovation underway!