Weistec Engineering – Mercedes-Benz M274 ECU Tune

Description

Weistec Engineering ECU tune for the M274-powered Mercedes-Benz models (2012-2021) with the Turbocharged 2L I4 (M274). Weistec’s crank figures put the tuned engine at 262 hp and 295 lb-ft, up from 255 hp and 273 lb-ft stock, from a recalibration of the factory ECU software.

Key Features:

• Up to +7 hp / +22 lb-ft: Weistec’s crank estimate of 262 hp and 295 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+), 9 Speed TCU Tune (2019+) and 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.
• Tuning method: Cypher Plus: flashed at home from your phone with a Weistec Cypher Plus.

Fitment:

• Mercedes-Benz C300 2015-2018 (W205 / S205 / C205 / A205) – Turbocharged 2L I4 (M274)
• Mercedes-Benz E250 2013-2016 (W212) – Turbocharged 2L I4 (M274)
• Mercedes-Benz E300 2016-2018 (W213) – Turbocharged 2L I4 (M274)
• Mercedes-Benz GLC250 2016-2019 (X253 / C253) – Turbocharged 2L I4 (M274)
• Mercedes-Benz GLC300 2016-2019 (X253 / C253) – Turbocharged 2L I4 (M274)
• Mercedes-Benz GLK200 2013-2015 (X204) – Turbocharged 2L I4 (M274)
• Mercedes-Benz GLK250 2012-2015 (X204) – Turbocharged 2L I4 (M274)
• Mercedes-Benz Metris 2016-2021 (W447) – Turbocharged 2L I4 (M274)
• Infiniti Q50 2016-2019 (V37) – Turbocharged 2L I4 (M274)
• Mercedes-Benz SLC300 2016-2020 (R172) – Turbocharged 2L I4 (M274)

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.