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NFSCO ‐ Tuning Guide

rx edited this page Feb 16, 2025 · 1 revision

This page documents tuning for all vehicle performance part types.

Engine

Always tune the engine full horsepower, since it increases power output by 22%. Your only other alternative is full torque if you want to reduce top speed - it also gives 22% additional power.

Transmission

This depends on your car and the tracks you are planning to use it on. General tuning is usually moderate acceleration or neutral. Some cars may prefer full acceleration for close gearing, while others (mainly muscle cars) may prefer longer gears for more top speed.

Suspension

Drive your car with the default neutral setup first and determine if the car has oversteer or understeer. Some cars may not have either and not require tuning. If your car slides around or loses a lot of speed during cornering, try tuning understeer. If your car struggles to turn in or pushes wide, try tuning oversteer. Avoid extreme tuning for racing outside of a few exceptions like the Elise or Sting Ray.

Nitrous

The duration of nitrous now changes with tuning. Lower stage nitrous and slower cars may prefer duration, while faster cars usually work best with neutral or moderate velocity tuning. Tracks with long straights can also benefit from a longer nitrous boost.

Tires

For racing, always use full grip tires unless you want the rear to slide out more. For drift races or freestyle it depends on your preference.

Brakes

Adjust the brake bias to control how the car behaves while braking. Increase rear bias if you want the car to turn or oversteer more while braking, or increase front bias if you want the car to be more stable.

Turbo

For racing, tune moderate or more towards high rpm to increase power in the most used rev range. Low rpm tuning is mostly useful for a pursuit car or if the turbos take too long to spool up.

Supercharger

Since superchargers are always active, it is recommended to tune full high rpm for more horsepower. Low rpm tuning can still be useful if you want to increase low to mid rev torque.