Stage 2

• For performance enthusiasts (works with aftermarket intakes, mass air sensors, TBI spacers, etc.)
• Fuel and timing curves extensively modified for use with 91 octane (required)
• More aggressive than Stage 1 in order to gain the most horsepower and torque available
• Requires 180° thermostat and free-flow exhaust

Economy

• For freeway cruising and road trips where mileage is more important than high performance
• Fuel and timing curves optimized for efficiency using 87 octane

Towing

• For pulling trailers and hauling
• Fuel and timing curves modified for use with 87 octane or better
• Improved low end torque and mid-range passing

Valet

• For abusive driving protection from valet parkers, teenagers, spouses, mechanics, etc.
• Restricts fuel delivery and governs RPM to prohibit unwanted driving

Security

• Built-in device can cut off fuel delivery to the injectors so the engine can't be started

Note: Legal for street use in all states, including California