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98-02 LS1 NX Stage I EFI Single Nozzle Nitrous System W/10 lb bottle.

Utilizing the patented "Shark" nozzle, these systems are fully adjustable up to 150HP for V-8 cars. These systems require no engine modifications, operate on stock fuel pumps, and require no timing retards. The ultimate solution to make your vehicle a "Rocket". Any horsepower settings above the recommended levels require "NX Power Booster" fuel additive to prevent detonation.