Description
Weistec Engineering ECU tune for the Mercedes-Benz C63 AMG S E-Performance and GLC63 AMG S E-Performance (2022-2026) with the Turbocharged 2L I4 (M139). Weistec’s crank figures put the tuned engine at 771 hp and 852 lb-ft, up from 671 hp and 752 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 771 hp and 852 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+), 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 C63 AMG S E-Performance 2022-2026 (W206 / S206) – Turbocharged 2L I4 (M139)
- Mercedes-Benz GLC63 AMG S E-Performance 2023-2026 (X254 / C254) – Turbocharged 2L I4 (M139)
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.
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