ProCharger 1999-07 GM 2500 6.0L Stage II Intercooled P-1SC-1 Supercharger Tuner Kit 1GI404-SCI

The ProCharger 1GI404-SCI Supercharger System is engineered to deliver strong, reliable horsepower and torque gains through a high-efficiency centrifugal supercharger design. Built for performance-focused applications, this system provides smooth, linear boost that increases with engine RPM, improving acceleration and overall engine output while maintaining excellent drivability.

An advanced intercooling system helps reduce intake air temperatures, allowing for a denser air charge and improved combustion efficiency. The result is consistent, repeatable performance under a wide range of driving conditions. Designed as a complete, precision-matched package, the 1GI404-SCI ensures proper fitment, durability, and long-term reliability.

Ideal For

• High-performance street builds
• Performance and racing applications
• Enthusiasts seeking reliable forced induction upgrades
• Vehicles requiring consistent, repeatable boost performance

Features & Specifications

• Centrifugal supercharger for progressive, RPM-based boost
• Self-contained oiling system (no engine oil tap required)
• Precision-engineered mounting brackets and hardware
• Durable belt-driven system for consistent boost delivery
• Significant horsepower and torque increases
• Maintains smooth drivability for street use

Notes

• Model year must be specified
• Specify 2WD or 4WD, Truck or SUV
• Modifications and custom tuning required for HD/2500 Series applications (Tuner Kits only)
• Specify if hydroboost option DA6) Specify stock or aftermarket balancer (utilizes ATI Balancer P/N 918635)
• Due to the wide variance of chassis and options available, modifications may be required
• Specify stock or aftermarket balancer (utilizes ATI Balancer P/N 918635
• Electric fan conversion required (sold separately by others)
• HD models with Hydroboost may require modifications to power steering reservoir