The Elantra tends to head straight for sixth gear to provide that fuel economy boost, but tends to downshift quickly — sometimes even dropping a few gears — when you hit the gas for a little extra boost of power. (yourmechanic.com)
However, when you want to supplement that routine with an extra boost of power, best steroids like Trenbolone can make a serious difference. (roids.co)
A controversial feature of Formula E, Fan Boost allows fans of the series to tweet for their favourite driver to gain an extra boost of power during the race (evo.co.uk)