Weistec Engineering – McLaren GT ECU Tune

Description

Weistec Engineering ECU tune for the McLaren GTS and GT (2019-2026) with the Twin Turbo 4L V8 (M840T). Weistec’s crank figures put the tuned engine at 745 hp and 550 lb-ft, up from 612 hp and 465 lb-ft stock, from a recalibration of the factory ECU software.

Key Features:

• Up to +133 hp / +85 lb-ft: Weistec’s crank estimate of 745 hp and 550 lb-ft, from Dynojet testing; real gains depend on fuel, conditions and supporting modifications.
• Stage calibrations: W.1 (Stock Vehicle) and W.2 (Race Exhaust fitted), so the calibration matches the hardware on your car.
• Reflash of the factory ECU: the original module is recalibrated rather than replaced with a stand-alone or piggyback unit.
• What changes: improved throttle response, optimized fuel and spark, increased boost and top speed limiter removed.
• Tuning method: Cypher Pro Dealer: installed through a certified Weistec Cypher Pro dealer.
• Burble & pops available: deceleration burble can be added to the calibration on request.

Fitment:

• McLaren GT 2019-2023 – Twin Turbo 4L V8 (M840T)
• McLaren GTS 2024-2026 – Twin Turbo 4L V8 (M840T)

Not legal for sale or use on pollution-controlled motor vehicles; intended for competition use. Talk to us before ordering to confirm the right stage and tuning method for your car.