Boost

The booster provides a tremendous increase in top speed and acceleration for a short duration. The booster can only be used once the booster gauge is filled. This process is automatic, but is greatly accelerated by performing combos. Colliding with walls, objects, and NPC vehicles will remove a portion of the booster gauge progress. The boost stat, along with special part effects and type C converted parts, influence the duration of the booster and, to a small extent, its recharge rate. The booster stat does not appear to affect the boost speed, which is approximately 125% of a cars normal top speed.