I was always .2 to .3 off the fast guys. Had to make up for that by running a clean race and getting through traffic. But I was maxxed out. Now with the R2, I am the fast guy. Driver didn't change. The speed increase is definitely all corner speed, I am zipping through the twisty bits.
I am having one problem with it. It seems that the motor is moving forward much more easily than with any of the other models. I got stuffed straight into the wall in the main and my pinion wasn't even touching the spur afterwards. When I got back to the pit, the motor screws seemed tight. But still it moved...
Looking for some 3mm star washers now.