For a speed boost, the player can jump off of ramps placed on the track.

Red ones produce a speed boost, while purple ones grant the opposite effect.

The latter provided a much bigger and more noticeable speed boost than spending the same money on a faster processor.

Tapping the fire button fires the player's weapons; holding it down gives the player a speed boost.

So, I mean, it can give you a speed boost.

Twisting your right hand like a throttle will get you a speed boost.

The longer the player is in the air, the bigger the speed boost will be when the kart lands.

In either case it provides a speed boost for the truck.

There is an opportunity to ride a chocobo in each level for a speed boost.

The players can use turbo to get a temporary speed boost.