Upgrade for the Boost Cooler Stage 2 VC50 system for injection optimization Boost Cooler Dual Stage Tech. Upgrade Upgrade for the Boost Cooler Stage 2 2E Power-Max system for injection optimization Simply convert the Stage 2 Boost Cooler VC50 system to a two stage injection control Simply convert the Stage 2 Boost Cooler 2E Power-Max system to a two stage injection control. The enclosed solenoid valve is controlled by the 2E Power Max (VC-50) control unit and activated an additional nozzle in the high load range. Features: At low engine load stage (low boost pressure), a smaller primary nozzle can be used to inject earlier, and a higher injection quantity can be made available by the Boost Cooler at high engine load state (peak boost pressure). Scope of delivery: Solenoid power-valve incl. 1/8"-1/4" rapid fittings T-connector 1/4" Tube 1/4" rapid Nozzle bracket 90° low profile, hard anodized