PSR Parts - External ECU Remap Tuning - BMW G20 G21 330e PSR-ECU-BMW-G2X30e

Unlock the true potential of your BMW G20/G21 330e with the PSR Parts External ECU Remap Tuning, delivering 350HP and 520Nm of torque. This advanced solution increases power, torque, and throttle response without modifying your original ECU software, providing a safe, reversible, and engine-specific performance upgrade.

Unlike typical “PowerBox” solutions, which rely on limited sensors, the PSR External ECU is a fully advanced engine management system. Using CANBUS and camshaft signals, it calculates optimal torque and power output under all driving conditions. This ensures precise, reliable, and efficient performance while maintaining safety for hybrid components and OPF/DPF systems.

Key Features & Benefits

• Advanced Engine Management: Monitors turbo pressure, RPM, and load for accurate torque delivery

• Dynamic Fuel & Hybrid Boost: Optimises fuel injection and electric motor assistance for enhanced low- and mid-range torque

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

• Load-Dependent Power Delivery: Fuel and hybrid torque dynamically respond to throttle input for smooth daily driving or aggressive performance

• Fuel Efficiency Gains: Fine atomisation of fuel ensures maximum power with minimal consumption

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

• Persistent Performance: Retains tuning through manufacturer software updates

How It Works

1. Engine RPM & Load Monitoring: Reads camshaft or CANBUS signals for accurate torque calculation

2. Torque Calculation: Measures engine acceleration to optimise fuel and electric boost

3. Injection Duration: Adjusts fuel injection via map sensor for smooth, 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 dynamically respond to accelerator input

6. Fuel Economy Optimization: Achieves higher performance while maintaining efficiency

Specifications

• Output: 350HP / 520Nm

• Installed in the engine compartment for persistent tuning

• Fully reversible and non-invasive installation

• Safe power optimisation within engine and hybrid limits

• Improves throttle response, torque, and overall drivability

• Compatible with BMW G20/G21 330e plug-in hybrid 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 any errors after installation

• No permanent modifications required

Compatibility / Fitment

• BMW G20 330e – Sedan (2019+)

• BMW G21 330e – Touring (2019+)

Designed specifically for BMW G20/G21 330e plug-in hybrid powertrains.