Editing F-Zero RPG/F-Zero RPG version 2 (section)

====Braking and Boosting====
You may choose to brake while passing through a section, but
you must declare if you are doing so before you make your initial
Piloting roll. Braking gives you a bonus to your Piloting roll for that
section: +1 per 20 km/h of deceleration. The maximum bonus for
braking is +2. 

You may also choose to brake below 300 km/h as an
action during your move to force the machine behind
you to pass. See VS Skills for more information.

You may use your machine's boost after the first lap.
You may declare that you are boosting during your
own move as well as the moves immediately before
and after it. When you boost your machine immediately
accelerates by its Boost Accel that action and every
successive action up to its listed Boost Max or until
its boost duration ends. You may not use successive
boosts until the current boost ends. You may not end a
boost early.

Each time you boost your machine loses 3 power
boxes. If you have fewer than 3 boxes you may not use
your boost. If you lose speed while boosting (from impact damage,
etc.) you accelerate every successive action according to your
machine's listed Boost Accel up to its Boost Max.

A non-boosting pilot has a -4 penalty to all Blocking, Ramming and
Sideswiping rolls against boosting pilots. If a boosting machine is
successfully blocked by a nonboosting machine the blocking machine
loses 1 power box.

If your machine is currently at its Boost Max you may attempt to pass
other machines regardless of their speed.