PSR Parts - External ECU Remap Tuning - BMW G05 X5 45E

Unlock the full potential of your BMW G05 X5 45E with the PSR Parts External ECU Remap Tuning, delivering 500HP and 720Nm of torque. Designed to enhance performance without altering the original ECU software, this advanced external ECU provides safe, reversible, and engine-specific tuning optimized for BMW plug-in hybrid powertrains.

Unlike standard “PowerBox” solutions, the PSR External ECU is a highly sophisticated engine management system. While typical tuning boxes rely on limited sensor data, the PSR ECU reads multiple signals from the engine—including turbo boost, RPM, and acceleration via CANBUS—to calculate the optimal torque and power output under all driving conditions. This ensures maximum performance while maintaining engine safety and efficiency.

Key Features & Benefits

• Advanced Engine Control: Monitors turbo pressure, RPM, and engine load for precise torque calculation

• Dynamic Fuel & Hybrid Assistance: Extends fuel injection duration and optimizes electric boost contribution for improved low- and mid-range torque

• Turbo Boost Optimization: Adjusts turbo spool-up and regulates boost pressure for stronger acceleration and higher power over a wider rev range

• Load-Dependent Power Delivery: Dynamically adjusts fuel and electric torque based on accelerator input for smooth everyday driving or aggressive full-load performance

• Fuel Efficiency Gains: Fine atomisation of fuel improves efficiency while delivering maximum power

• Safe & Reversible: Fully reversible installation, without modifying the original ECU software

• Persistent Performance: Retains tuning through manufacturer software updates, unlike standard remaps

How It Works

1. Engine RPM & Load Monitoring: Reads engine speed from camshaft or CANBUS for precise torque calculation

2. Torque Calculation: Measures engine acceleration to optimize fuel and electric power delivery

3. Injection Duration: Adjusts fuel injection via map sensor for smoother, more responsive power

4. Turbo Boost Control: Regulates turbo spool-up timing and boost pressure for enhanced pulling power

5. Load-Dependent Adjustment: Fuel and hybrid torque respond dynamically to accelerator input

6. Fuel Economy Optimization: Achieves higher performance while maintaining efficient fuel consumption

Specifications

• Output: 500HP / 720Nm

• Installed in the engine compartment for persistent tuning

• Fully reversible and non-invasive installation

• Safe power optimization within engine and hybrid system limits

• Improves throttle response, torque, and drivability

• Compatible with BMW G05 X5 45E hybrid plug-in powertrain

Installation Notes

• Professional installation recommended if unsure

• Let the vehicle rest 10 minutes after opening the hood before unplugging sensors

• OBD tools may be required to clear errors after installation

• No permanent modifications required

Compatibility / Fitment

• BMW G05 X5 45E (Plug-in Hybrid, 2019+)

Designed specifically for BMW G05 X5 45E plug-in hybrid powertrain.