Weistec Engineering – Mercedes-Benz M276 DE 35 ECU Tune, Naturally Aspirated

Description

Weistec Engineering ECU tune for the M276 DE35-powered Mercedes-Benz models (2007-2018) with the 3.5L V6 (M276 DE35). Weistec’s crank figures put the tuned engine at 331 hp and 296 lb-ft, up from 302 hp and 273 lb-ft stock, from a recalibration of the factory ECU software.

Key Features:

• Up to +29 hp / +23 lb-ft: Weistec’s crank estimate of 331 hp and 296 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: 7 Speed TCU Tune (Pre-2019) and Cypher Classic Handheld, 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 and top speed limiter removed.
• Tuning method: Cypher Classic: flashed at home with the Weistec Cypher Classic handheld.

Fitment:

• Mercedes-Benz C300 2012-2014 (W204) – 3.5L V6 (M276 DE35)
• Mercedes-Benz C350 2011-2014 (W204 / C204) – 3.5L V6 (M276 DE35)
• Mercedes-Benz C350 BlueEFFICIENCY 2011-2014 (W204 / C204) – 3.5L V6 (M276 DE35)
• Mercedes-Benz CLS350 BlueEFFICIENCY 2011-2014 (C218 / X218) – 3.5L V6 (M276 DE35)
• Mercedes-Benz E300 BlueEFFICIENCY 2011-2014 (W212) – 3.5L V6 (M276 DE35)
• Mercedes-Benz E350 BlueEFFICIENCY 2011-2014 (W212 / C207 / A207) – 3.5L V6 (M276 DE35)
• Mercedes-Benz E400 Hybrid 2012-2016 (W212) – 3.5L V6 (M276 DE35)
• Mercedes-Benz GLE350 2016-2018 (W166) – 3.5L V6 (M276 DE35)
• Mercedes-Benz GLK350 2012-2015 (X204) – 3.5L V6 (M276 DE35)
• Mercedes-Benz ML350 BlueEFFICIENCY 2012-2015 (W166) – 3.5L V6 (M276 DE35)
• Mercedes-Benz R350 BlueEfficiency 2007-2012 (W251) – 3.5L V6 (M276 DE35)
• Mercedes-Benz S350 BlueEFFICIENCY 2011-2013 (W221) – 3.5L V6 (M276 DE35)
• Mercedes-Benz SLK350 BlueEfficiency 2011-2016 (R172) – 3.5L V6 (M276 DE35)

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.