Controller-only upgrade that converts a Stage 1 Boost Cooler into a Stage 2 variable injection system. The VC-30 replaces your existing Stage 1 pressure switch — no need to replace your pump, tank, nozzles, or lines. Just swap the controller and gain variable, boost-proportional injection.

What's in the Box

• VC-30 variable controller unit (boost-proportional injection)
• LCD display for setting start/full injection points
• Wiring harness and connectors
• Installation guide

Key Features

• Upgrades from: Stage 1 → Stage 2
• What changes: Fixed on/off injection becomes variable, boost-proportional injection
• What stays: Your existing pump, tank, nozzles, and lines — no replumbing needed
• Compatibility: All turbo, supercharged, and turbodiesel engines up to ~2.1 bar boost
• Response time: 1.5 milliseconds

Do I Need This?

If you already have a Stage 1 kit and want smoother, more precise injection without buying a whole new system. If you're starting from scratch, buy the Stage 2 complete kit instead — it includes the VC-30 controller plus pump, tank, and nozzles.