A McLaren 675LT 3.8 V8 675hp makes about 700 hp and 750 Nm with Stage 1 software, compared with 675 hp and 700 Nm from the factory. That is 25 hp and 50 Nm extra.

This is a petrol engine with a displacement of 3,799 cc and engine code 38JBAC. The engine is controlled by the Bosch ME17.8.3. The software file can be written with tools such as Autotuner.

Besides Stage 1, the following options are available for this vehicle: DECAT, DTC Removal, START/STOP OFF, FLAPS, Pop & Bang Crackle map and Vmax.

Frequently asked questions

How much power and torque does a McLaren 675LT 3.8 V8 675hp gain with Stage 1?

About 25 hp and 50 Nm: from 675 hp / 700 Nm to roughly 700 hp / 750 Nm. The exact gain depends on engine condition and fuel quality.

Which ECU does a McLaren 675LT 3.8 V8 675hp use?

Bosch ME17.8.3.

Which tools can read a McLaren 675LT 3.8 V8 675hp?

Autotuner.

Which extra options are available for a McLaren 675LT 3.8 V8 675hp?

DECAT, DTC Removal, START/STOP OFF, FLAPS, Pop & Bang Crackle map and Vmax.

Figures are indicative and vehicle specific. Check the regulations that apply in your country before modifying engine software.