Agree JP has some great skills wheeling a rc car. I pretty much have all the timing and punch settings near the high end of the options. With mod it seems to not be as critical to be at setting 8 instead of 7 on something. Especially with the 7.5 The last setting is knocked back a little especially on the 4wd buggy to keep temps down a little. I think it is the SCPunch setting.
I usually run the 2wd cars with the epa down between 80 and 90 percent and adjust slipper and expo settings for track conditions. I like the added rip of the 7.5 to pull ahead of someone when battling out of a corner or where ever. A quick blip can put me back up front. It can be a handful as well though.
It has been months of using the equipment and I still have experimenting to do. I will post discoveries as I find them.