Scanmaster Diagnostic Monitor 2.1

Used Scanmaster 2.1 diagnostic display, a must-have tuning and monitoring tool for Turbo Buick owners. This unit reads real-time engine data directly from the ECM, allowing you to monitor key parameters like O₂ voltage, knock retard, BLMs, and INT — all at a glance.

The display is clear, buttons function properly, and the screen lights up as expected. Perfect for cars running the stock ECM setup and looking to keep performance dialed in safely.

🔹 Condition: Green Dot – Good used condition (60% off retail)
🔹 Compatibility: 1986–1987 Buick Grand National / Turbo T / T-Type / Regal with stock ECM
🔹 Features:

• Real-time data display for tuning and diagnostics

• Simple two-wire hookup

• Compact, dash-mount design
  🔹 Notes: Light surface wear from normal use; fully functional and tested before removal