Weistec Engineering – Mercedes-Benz M256 Hybrid ECU Tune – E53 AMG Hybrid / GLE53 AMG Hybrid

Description

Weistec Engineering ECU tune for the Mercedes-Benz E53 AMG Hybrid and GLE53 AMG Hybrid (2024-2026) with the Turbocharged 3L I6 (M256). Weistec’s crank figures put the tuned engine at 636 hp and 653 lb-ft, up from 536 hp and 553 lb-ft stock, from a recalibration of the factory ECU software.

Key Features:

• Up to +100 hp / +100 lb-ft: Weistec’s crank estimate of 636 hp and 653 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.
• Optional add-ons: CPC Module (2019+) and 9 Speed TCU Tune (2019+), each selectable when you order.
• 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.

Fitment:

• Mercedes-Benz E53 AMG Hybrid 2024-2026 (W214) – Turbocharged 3L I6 (M256)
• Mercedes-Benz GLE53 AMG Hybrid 2026 (V167 / C167) – Turbocharged 3L I6 (M256)

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.