Advantage Capacitor A
This is use with Brushless motors. This is useful for power is down after the second half of the drive time. This is make up good total average lap time. Therefore, the whole elapsed time is reduced.
*This effect is different by your ESC.
Please also check "Capacitor for Brush-less motor Chart for selection" are here.
Advantage Capacitor A x1
ESCAdvantage CapacitorA Manual
Option for ESC