PSR Parts - External ECU Remap Tuning - BMW G20 G21 330i PSR-ECU-BMW-G2X30i

Maximise the performance of your BMW G20/G21 330i with the PSR Parts External ECU Remap Tuning, delivering 311HP and 490Nm of torque. This advanced solution boosts power, torque, and throttle response without altering the original ECU software, providing a safe, reversible, and engine-specific upgrade.

Unlike standard PowerBox solutions, the PSR External ECU is a highly advanced engine management system. It uses CANBUS and camshaft signals to optimise torque and power output across all driving conditions. This ensures precise, reliable, and efficient performance, while maintaining safety for engine components and OPF/DPF systems.

Key Features & Benefits

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

• Dynamic Fuel Injection: Adjusts injection duration for enhanced low- and mid-range torque

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

• Load-Dependent Power Delivery: Dynamically adjusts fuel and torque based on throttle input for smooth daily driving or aggressive performance

• Fuel Efficiency Gains: Fine atomisation of fuel achieves higher power with minimal consumption

• Safe & Reversible: Installation does not modify the original ECU and is fully reversible

• Persistent Performance: Retains tuning through manufacturer software updates

How It Works

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

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

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 torque dynamically respond to accelerator input

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

Specifications

• Output: 311HP / 490Nm

• Installed in the engine compartment for persistent tuning

• Fully reversible and non-invasive installation

• Safe power optimisation within engine limits

• Improves throttle response, torque, and overall drivability

• Compatible with BMW G20/G21 330i petrol engines

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 330i – Sedan (2019+)

• BMW G21 330i – Touring (2019+)

Specifically engineered for BMW G20/G21 330i petrol engines.