Sport 2
The "SP2" graph shows a significant change in throttle compared to a stock throttle. The "SP2" setting increases the throttle ratio twice the rate of the SP1 setting, designed for sport driving and circuit use. From 0 to 100 percent, throttle characteristics through acceleration are increased dramatically.

Sport 3
Blitz engineers have labeled the most aggressive setting, known as "SP3," for extreme sport and circuit use. The throttle is opened at four times the standard accelerator position. Graphs show at 50 percent acceleration, the throttle at full engagement at 100 percent. Driving in this mode on the local streets and highways in traffic can be a daunting task since the car will have a tendency to lunge forward when clutching due to the rapid increase in rpm and throttle. This setting is ideal for track usage or quarter-mile sessions.

SOURCE
Blitz Performance USA