Enhance your USDM Subaru 02-05 ‘Bug Eye’ Impreza WRX with the MS3Pro Plug & Play ECU – A fully standalone, plug-and-play engine management solution designed for easy installation and maximum performance. This ECU is the ultimate choice for serious racers seeking reliable, custom-tuned engine management for off-road and motorsports applications. Important: This unit is designed for Manual Transmission Only and does not support Automatic Transmission Control. Compatibility: 02-05 USDM Subaru ‘Bug Eye’ Impreza WRX MSPNP-Pro ECU Supports: 2002-2005 USDM Subaru Impreza WRX: EJ205 2.0L (Manual Transmission Only) Important Compatibility Notes: 2002-2005 USDM Subaru Impreza WRX STI: NOT Compatible 2002-2005 Subaru Impreza WRX (excluding US Market EJ205): NOT Compatible Features: Fully Plug and Play Installation: No wiring required for basic functionality Average Install Time: Under 1 hour! Base Map Pre-loaded: Helps your engine start on the first turn of the key Real-Time Tuning & Data Logging: Connect via laptop for easy data monitoring 8 GB Internal Data Logging: Includes built-in SD card for easy data storage Supports Most Aftermarket Wideband Sensors: Integrates with popular systems for accurate tuning Fully Tunable Engine Control: 16×16 Fuel and Ignition Tables: High-resolution tuning for precise fuel control over fuel and ignition mapping Multiple Acceleration Enrichment Strategies: Optimizes fuel and timing for acceleration Closed Loop Idle Speed Control: Keeps idle stable in varying conditions Air Conditioner Control: Manages AC load based on engine performance 4 Sequential Fuel Injector Channels: With individual trim tables for precise fuel control 4 Sequential Ignition Channels: With individual trim tables for precise ignition control Onboard High Impedance Injector Drivers: Drives modern injectors efficiently Allows Removal of Stock Airflow Meter: Offers more flexibility in tuning Advanced Feature Set: 12×12 Air-Fuel Ratio Target Tables: Use with wideband O2 sensor for precise tuning AVCS (Variable Valve Timing) Support: Full factory VVT control for improved timing and performance (for engine swaps wiring is requires into the rear options connector for Variable Valve Timing Control) Multiple Traction Control Strategies: Add a front wheel VSS for traction control capabilities Built-in 3-Step Rev Limiter/Launch Control: Includes flat shift and burnout rev limiter Real-Time Barometric Correction: Adjusts for altitude changes during tuning Internal 4-Bar MAP Sensor: Reads up to 44 PSI of boost for aggressive tuning Overboost Protection: Protects the engine by monitoring boost levels Closed Loop Boost Control: Requires EBC solenoid kit for precise boost management CO2-Based Boost Control: Allows precise boost control using CO2, enhancing performance and consistency under varying conditions Rally-Style Anti-Lag: Boosts performance during launches Water Injection Control: On/Off or variable control for optimized performance Knock Sensor Input: Adjustable sensitivity, crank angle windowing, and more Table Switching Input: Change fuel and spark maps on the fly for different fuels, nitrous activation, etc. Flex Fuel Sensor Input: Seamlessly switch between E85 and gasoline CANBus Connector: Allows interconnection with other MegaSquirt-compatible devices for additional functions (EGT Input, Additional Sensors, etc.) What’s in the Box: 2002-2005 Subaru ‘Bug Eye’ Impreza WRX MS3Pro Plug and Play ECU 6’ Vacuum Hose for MAP Signal and ‘T’ Fitting 26 Pin Connector for Options Port with 6″ Wire Pigtail M8 Serial Tuning Cable TunerStudio Registration Code