Need for Speed Underground (GameCube): Getting Nitrous (Not Turbo)

Need for Speed: Underground on GameCube does not have a "turbo" upgrade. The forced-induction mechanic is Nitrous Oxide (NOS).

How to Get & Use Nitrous

1. Unlock the Nitrous Upgrade: Progress through Underground Mode (career). Nitrous becomes available at the Performance Shop after specific races (typically early-mid game).
2. Purchase It: Go to Performance → Nitrous. Choose Level 1, 2, or 3 (higher = longer duration, more expensive).
3. Refill During Races: Drive over blue NOS canisters on the track. Each restores a chunk of your meter.
4. Activate: Press R (GameCube) / RB (Xbox) / R1 (PS2) by default. Your screen blurs, speed spikes, and the meter drains.

Key Mechanics

• Cooldown: After use, the meter must refill (via canisters or slowly over time) before another burst.
• Strategy: Save for straightaways, exiting corners, or overtaking. Don't waste in traffic or tight corners—you'll spin out.
• Drag Races: Nitrous is essential. Time the shift light + NOS for max acceleration.

GameCube Controls Refresher

• Gas: A
• Brake/Reverse: B
• Handbrake: L
• Nitrous: R
• Look Back: D-Pad Down / C-Stick
• Change Camera: D-Pad Up

There is no turbocharger or supercharger part in Underground. Nitrous is the boost mechanic. Max it out (Level 3) and hunt every canister on the track.