750S ECU Tune

Product Description

The 750S picked up where the 720S left off, and while it isn't a clean-sheet car, McLaren didn't treat it like a light refresh either: roughly 30 percent of its parts are new or revised. The M840T twin-turbo V8 carries over as the heart of the car, but it comes back with more boost, twin fuel pumps, lighter pistons, and a revised engine management system, lifting factory output from 710 to 740 hp, while a shorter final-drive ratio and a quicker-shifting seven-speed gearbox make sure that power actually gets to the road faster. It's the Super Series formula the 720S established, sharpened rather than replaced.

Weistec's ECU calibration for the 750S is a software recalibration built on top of that updated factory M840T. It's tuned to work with McLaren's own engineering rather than against it. Factory protections, from knock control to thermal management to OEM diagnostics, are left fully in place. Calibrated to OEM-level standards, it takes this 750S from a factory 740 hp and 590 lb-ft to 952 hp and 720 lb-ft, giving an already-sharpened car the kind of edge McLaren's own engineers would respect.