Nitrous Express 15125 Direct Port Water/Methanol Injection System 4-Cylinder Stage 2

The Nitrous Express 15125 is a Direct Port Water/Methanol Injection System designed specifically for 4-cylinder engines. Unlike intake manifold-mounted systems, this direct port design injects the water/methanol mixture directly into each individual intake runner, ensuring precise and even distribution to every cylinder for maximum performance and detonation protection.

System Overview:

• High-pressure electric pump delivers consistent water/methanol flow at all engine operating conditions
• High-pressure push-lock hose for secure, leak-resistant connections throughout the system
• Filtered nozzles protect against contaminants and ensure consistent spray patterns
• Nickel-plated fittings for corrosion resistance and long-term durability
• Composite reservoir for lightweight, durable fluid storage

Stage 2 Digital Progressive Controller:

• Includes a digital progressive controller that precisely manages water/methanol output across the RPM and load range
• Simple setup via rotary dial adjustments on the progressive controller box — no laptop or software required
• Progressive control prevents over-injection at low loads and maximizes protection at wide-open throttle

Why Direct Port Injection?

• Delivers water/methanol mixture directly into each intake runner for cylinder-by-cylinder distribution
• Reduces intake charge temperature to lower the risk of detonation (knock)
• Allows for increased boost pressure and/or ignition timing advance
• Compatible with both turbocharged and supercharged 4-cylinder applications

The Nitrous Express 15125 Stage 2 system strikes the ideal balance between ease of installation and tuning flexibility, making it a popular choice for performance enthusiasts who demand reliable, progressive water/methanol injection without the complexity of a fully programmable Stage 3 controller.