Nitrous Express NX Digital RPM Window Switch for All Ignition Types - 18959

The Nitrous Express NX Digital RPM Window Switch (MPN: 18959) provides essential electronic protection for your engine and nitrous system. By defining a precise window of activation, this controller ensures nitrous only flows when the engine is within a safe, power-producing RPM range. This prevents the high-stress lean conditions that occur during low-RPM activation and automatically shuts off the system before you hit the factory rev limiter.

This modern digital design replaces outdated mechanical "pills" or RPM chips. The unit features an integrated display and interface that allows you to set high and low RPM points quickly and easily at the track without needing a laptop or external tuning hardware. It is compatible with virtually all ignition types, including distributor-based, DIS, and coil-on-plug systems.

• Fits all ignition types with no RPM chips or pills required
• Digital interface for rapid adjustment of activation and cut-off points
• Protects engine by preventing activation at low RPMs
• Integrated over-rev protection shuts off nitrous before the rev limiter
• Stand-alone operation with no laptop connection required
• Manufacturer Part Number: 18959