Weistec Engineering – Mercedes-Benz M157 ECU Tune

Description

Weistec Engineering ECU tune for the M157-powered Mercedes-Benz models (2011-2019) with the Twin Turbo 5.5L V8 (M157). Weistec’s crank figures put the tuned engine at 715 hp and 777 lb-ft, up from 549 hp and 531 lb-ft stock, from a recalibration of the factory ECU software.

Key Features:

• Up to +166 hp / +246 lb-ft: Weistec’s crank estimate of 715 hp and 777 lb-ft, from Dynojet testing; real gains depend on fuel, conditions and supporting modifications.
• CARB EO D-691-1: W.1 is CARB-exempt and street legal in all 50 US states; W.2 is for competition use.
• Stage calibrations: W.1 (Stock Vehicle) and W.2 (Race Exhaust fitted), so the calibration matches the hardware on your car.
• Optional add-ons: 7 Speed TCU Tune (Pre-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.

Fitment:

• Mercedes-Benz CL63 AMG 2011-2014 (C216) – Twin Turbo 5.5L V8 (M157)
• Mercedes-Benz CLS63 AMG 2011-2018 (C218 / X218) – Twin Turbo 5.5L V8 (M157)
• Mercedes-Benz CLS63 AMG S 2014-2018 (C218) – Twin Turbo 5.5L V8 (M157)
• Mercedes-Benz E63 AMG 2012-2016 (W212) – Twin Turbo 5.5L V8 (M157)
• Mercedes-Benz E63 AMG S 2013-2016 (W212) – Twin Turbo 5.5L V8 (M157)
• Mercedes-Benz G63 AMG 2012-2017 (W463) – Twin Turbo 5.5L V8 (M157)
• Mercedes-Benz G63 AMG 6×6 2013-2015 (W463) – Twin Turbo 5.5L V8 (M157)
• Mercedes-Benz GL63 AMG 2012-2015 (X166) – Twin Turbo 5.5L V8 (M157)
• Mercedes-Benz GLE63 AMG 2015-2019 (W166 / C292) – Twin Turbo 5.5L V8 (M157)
• Mercedes-Benz GLE63 AMG S 2015-2019 (W166 / C292) – Twin Turbo 5.5L V8 (M157)
• Mercedes-Benz GLS63 AMG 2015-2019 (X166) – Twin Turbo 5.5L V8 (M157)
• Mercedes-Benz ML63 AMG 2012-2015 (W166) – Twin Turbo 5.5L V8 (M157)
• Mercedes-Benz S63 AMG 2011-2017 (W221, W222 / C217 / A217) – Twin Turbo 5.5L V8 (M157)
• Mercedes-Benz SL63 AMG 2012-2019 (R231) – Twin Turbo 5.5L V8 (M157)

Talk to us before ordering to confirm the right stage and tuning method for your car.