No official figures yet as I am waiting to see if I can arrange a run on a local airfield. But the difference in daily driving is very noticeable. Overtaking between 50 and 70 is nothing short of outstanding, third gear gives a great surge forward but in reality you never need to go lower than fourth in most fast road conditions unless you want to hear her scream a bit. A couple of friends have now been out in her after the tune and are impressed by the way the power seems to just keep coming all the way up the Rev range. Lower gears need a lot more respect or the back end starts to get away from you very quickly, which is great fun on the fairly dry roads around us at the moment, but could get hairy with some fresh rain in the autumn. All in all a very worthwhile spend. Will hopefully have some figures soon.