The most advanced Boost Cooler controller — Stage 4 with boost × RPM 2D mapping, PC software tuning, and data logging. Designed for serious builds running high boost, big turbos, or pure methanol. Full map-based injection control modelled after modern OEM fuel management systems.

What's in the Box

• Stage 4 V2 controller unit (2D mapping: boost × RPM)
• PC tuning software (Windows) with USB cable
• Bosch wiring harness (OEM-grade)
• MAP sensor support (0–100 PSI and GM 3-bar compatible)
• Installation guide

Key Features

• Upgrades from: Any stage → Stage 4
• Injection mapping: Full 2D map (boost × RPM) — tuned via PC software, not buttons
• Software features: Real-time data viewing, map storage/export, built-in data logging for diagnostics
• MAP sensor support: 0–100 PSI and GM 3-bar sensors — multi-point calibration
• What stays: Your existing pump, tank, and nozzles
• Designed for: High-boost turbo builds, race applications, pure methanol setups

Do I Need This?

Stage 4 is for builds where you need RPM-based control in addition to boost. For most street cars, Stage 3 EFI/DI is more than enough. Stage 4 is the choice for race builds and serious power applications.