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Nitrous Oxide upgrades in Need for Speed: Underground 2 can be applied to enable temporary Nitrous speed boosts or further improve them.

The effectiveness of an individual part is dependent on the package they are included in;

  • Street - Low speed increase
  • Pro - Moderate speed increase
  • Extreme - High speed increase

Upgrades

Package Part Price Unlock
Street Dry Shot of Nitrous Oxide 750 Find the Performance Shop in Beacon Hill
Pro Wet Shot of Nitrous Oxide 2,000 Find the Performance Shop in Coal Harbor East
Extreme Direct Port Nitrous Oxide 4,000 ?
Unique Direct Port Nitrous Oxide 4,000 Win 6 Outrun Races in Stage 5

Incompatible Upgrades

  • Dry Shot of Nitrous Oxide - Wet Shot of Nitrous Oxide - Direct Port Nitrous Oxide

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