12.3″ Standard Dash 84-87 Buick Grand National

Build Time: Up to 6 Weeks The DD-EFI 12.3″ Digital Dash is the first fully Plug-N-Play digital display solution for MegaSquirt-equipped vehicles. Designed specifically for 1984–1987 Buick Grand National models, this unit replaces the factory instrument cluster with a high-resolution 12.3″ LCD and custom bezel that fits perfectly into the stock dashboard opening. It delivers modern display technology while preserving OEM aesthetics. This all-in-one enclosure includes everything needed for seamless integration with your ECU, featuring in-dash tuning, and customizable layouts. Built-In GPS Supplies speed signal for digital speedometer Enables additional features: latitude/longitude, fuel economy, trip meter, odometer Software & Features Full version of TunerStudio pre-installed Also includes MegaLogViewer and AnyDesk Custom splash screen Customizable digital dashboards 32GB internal storage for automatic data logging Sleep mode after ignition off Auto shutdown (default 60 min, user-configurable) Custom Grand National Bezel Direct bolt-in replacement for 1984–1987 Buick Grand National factory cluster Matches factory dashboard for OEM+ appearance What's Included DD-EFI 12.3″ Digital Dash High-resolution LCD screen Internal GPS 32GB internal storage Power Connector Pre-installed software: TunerStudio, MegaLogViewer, AnyDesk