I know it's not a definte comparison, but its something that is noticeable given that over the course of the runs in which I compared the two modes, the air temperature/track temperature only varied by 1 degree and the humidity/pressure remained within a similar range. The comparative runs (3 of each) were launched at the same RPM, etc so that minimises the variables. Like I said, it's not completely accurate, but until there is better evidence, then this is what has been found so far. Hard to hold the Aurion in a gear when in 'D' mode if you were to dyno it. how do they dyno automatic gears? If you leave it in S mode with gear 6 selected wouldnt the gear shifting still go to 1 to 6?