From 6.5hp normal karts to 9hp "super karts" is a good change. They definately pull out from corners, especially that tight hairpin next to the pits, a LOT harder. The only bad thing about them was that since they're not normally used, the tires are cold and don't start to grip until about halfway through the 8 minute heat. Once they did warm up, I managed a 32.3. Hopefully the next time I get there, I'll figure out how to get into the high 31's (if I feel like paying the extra $5 premium to drive those karts).