EFI Hi-Ram Plate System w/10lb Bottle

The Nitrous Express EFI Hi-Ram Plate System with 10lb Bottle is a wet single-stage nitrous oxide injection system engineered for naturally aspirated engines running 50–400 horsepower. This platform integrates seamlessly with Holley Hi-Ram EFI manifolds, delivering consistent, reliable boost through direct fuel and nitrous metering via precision plate technology. The complete kit arrives with a 10-pound capacity bottle, providing multiple activation cycles per fill while maintaining pressure consistency across the power band.

The wet-plate design injects nitrous oxide directly onto the fuel charge within the intake manifold, enabling efficient atomization and combustion. Single-stage operation keeps the system mechanically simple—one solenoid pulse delivers the full nitrous shot—eliminating complexity that complicates tuning and maintenance. The 10-pound bottle is sized for street and bracket racing applications where frequent recharging between events is practical. Holley Hi-Ram manifold compatibility ensures OEM-level fitment and eliminates the guesswork of adapter selection or manifold modification.

This system targets street performance enthusiasts, bracket racers, and drag racing competitors who demand repeatable power delivery without sacrificing engine reliability. The 50–400 HP range accommodates everything from mild street builds to full-tilt race engines, making the EFI Hi-Ram platform a scalable choice as engine modifications progress. Nitrous oxide injection complements existing forced-induction systems or serves as standalone boost for naturally aspirated powerplants seeking an affordable horsepower bump with minimal installation footprint.