Document 18 - Technical Delegate's Report

Date: 16 May 2025 Time: 18:52

This report details the technical checks performed on all cars during the 2025 Emilia Romagna Grand Prix free practice sessions (P1 and P2).

Before the first free practice session:

• Exhaust system components were checked against team declarations.

During the first free practice session:

• Tyre starting pressures.
• Engine high rev limit bands.
• Fuel flow meter calibration checksum.
• Instantaneous fuel mass flow.
• Partial load fuel mass flow.
• Fuel temperature.
• Plenum temperature.
• Exhaust fluid mass flow.
• IVT code and calibration checksums.
• IVT temperatures.
• ES state of charge on-track limits.
• Lap energy release and recovery limits.
• MGU-K power limits.
• Maximum MGU-K speed.
• Maximum MGU-K torque.
• Maximum MGU-H speed.
• Torque coordinator demands.
• Torque control.
• Custom software versions.
• Chassis FIA checksum.
• Torque sensor software version checks.
• Torque sensor calibration checks.

After the first free practice session:

• Fuel pressure.
• Logged pressure within the engine cooling system.

During the second free practice session:

• Tyre starting pressures.
• Engine high rev limit bands.
• Fuel flow meter calibration checksum.
• Instantaneous fuel mass flow.
• Partial load fuel mass flow.
• Fuel temperature.
• Plenum temperature.
• Exhaust fluid mass flow.

After the second free practice session:

• Car number 43 was weighed.
• Fuel pressure.
• Logged pressure within the engine cooling system.
• IVT code and calibration checksums.
• IVT temperatures.
• ES state of charge on-track limits.
• Lap energy release and recovery limits.
• MGU-K power limits.
• Maximum MGU-K speed.
• Maximum MGU-K torque.
• Maximum MGU-H speed.
• Torque coordinator demands.
• Torque control.
• Chassis FIA checksum.
• Rear brakes pressure control.
• Custom software versions.
• SECU software versions.
• Tyres used by all drivers during the sessions.

All checked items were found to conform with the 2025 FIA Formula One Technical Regulations.