Auxiliary Upgrades

Auxiliary Upgrades are special items a player can equip for $30,000 usually or more, and are used to aid the player. Such as reducing the damage they receive, being able to repair their vehicle's health, making them immune to killswitch EMP attacks, giving them greater mass to deliver more damage to the cops, or refill their nitrous, etc.

There are passive, and active types of auxiliary upgrades. One type that can be activated by the player at will and that refill overtime, as well as ones with side effects while the player is racing and/or in pursuits.

Trivia

 * Repair Kits have two types and two tiers.
 * Killswitch Jammers can be used indefinitely. There used to be a "God Mode" glitch right before the recent patch where the player could purchase a killswitch jammer, and then go to the upgrade shop next to the speedway and Lucas's garage and then replace it a repair kit, and the game will confuse it with the killswitch jammerand not apply a number to it, giving the Player an unlimited repairs and potentially creating a small chance of escaping easier. This didn't fully have much of an advantage as it should've, since you still needed to use a gas station anyway due to the very long intervals when used once.
 * Damage Increasers can be used to quite an advantage as the real problem is cops ramming you from the back which is you and their weak spots.