Nitrous Booster
This can be a tactically useful addition to your car and is not considered a weapon for the purposes of Races. It takes space like a weapon though.
When used this will increase your speed by up to 15mph per turn for approximately 3 turns. Be VERY careful when and where you use this booster. You can EASILY lose control of your car if you are in a turn or you have the wheel turned even slightly.
Unlike other weapons, it doesn't matter where you mount a Nitrous Booster.
Using the booster will dirty your engine, which means it will take temporary damage from use. This damage is removed after the event.
If used too often in successive turns you also risk severely damaging your engine. It is best used when the throttle is below the red-line, and the wheels straight.