The engine upgrades emphasize on a number of factors:
- Increasing the speed at which RPM picks up.
- Decreasing the RPM loss while shifting.
- Making it easier to handle low RPMs at high gears.
Engine upgrades are a must if you want a high performance ride.
There a five engine upgrade packages:
The Race package consists of:
- Cold Air Intake
- Sports Muffler
- Intake Manifold
This upgrade if available from the beginning of the game.
The pro package consists of:
- Forged Pistons
- Racing Throttle Body
- Racing Crankshaft
This upgrade can be unlocked by beating Izzy, Blacklist member 12.
The super pro package consists of:
- Racing Valves
- Replace Headers
- Cat-back Exhaust System
This upgrade can be unlocked by beating Kaze, Blacklist member 7.
The ultimate package consists of:
- Racing Pistons
- High Flow Fuel Injectors
- High Capacity Oil Cooler
Junkman (Custom Performance Upgrade)Edit
The junkman package consists of:
- Custom Intake and Exhaust
The junkman upgrade applies the currently applied engine package with a customizable system. It gives the best performance when combined with the Ultimate engine package.
- Two of the five engine upgrades are unlocked by female racers (Izzy and Kaze)
- The Super Pro package is able to change the engine sound of all the cars it is equipped on.
- The Ultimate Engine Package's price far outclasses the cost of any other upgrade in the game.