Nitrous

Nitrous is a feature in Need For Speed: Heat like all the other games where the player can go faster by releasing it by pressing a certain button, in which is used to aid them in a race or pursuit to go faster and increase their chances at winning a race or escaping the cops.

Unlike the previous Need for Speed titles, you can get multiple cans for your car so you can use it more than once before it slowly refills each can. But these bear the same purpose as if you just got one main can. The other difference is how the