Calibration Capabilities

The module provides access to a wide range of maps for fine-tuning engine performance and behavior:

Air & Airflow Management

• Air Calculation: Maps for nominal charge calculation and volumetric efficiency at part load.

• Airflow Correction: Multipliers for volumetric efficiency based on coolant and intake temperatures, as well as airflow through the throttle body.

Engine Speed & Idle Control

• Idle Speed: Management of desired idle speeds in drive and P/N, including adjustments for high-octane fuel and AC-on conditions.

• Limiters: Adjustments for engine speed (RPM) limits based on oil/coolant temperature and vehicle speed (Vmax) limitation.

Fuel & Spark Management

• Injection: Control over fuel quantity, Lambda base values, and power enrichment for both regular and high-octane fuels.

• Spark Advance: Editing of base ignition angle maps, knock detection factors, and spark corrections based on engine or intake air temperatures.

Turbocharger & Torque Control

• Turbo: Comprehensive control over boost pressure, target pressure ratios, wastegate area calibration, and compressor inlet protection.

• Torque: Mapping of accelerator pedal torque requests and gear-specific torque limits.

Additional Systems

• Variable Valve Timing (VVT): Adjustments for both intake and exhaust camshaft angles.

• DTC: Management of Diagnostic Trouble Codes.

• Throttle: Control of throttle valve opening angles and adaptation voltage limits.

• Temperature: Monitoring and adjustment of Exhaust Gas Temperature (EGT).

Technical Note

Editing calibrations with this module requires a compatible bin file read from the ECU. Because GPEC4 units often feature factory tuning protection, they generally must be unlocked using a tool like the BitBox FCA Petrol Gen2 CAN module before modified files can be written back to the vehicle.