M276 DE 35 Tune ECU Upgrade

The Weistec Mercedes M276 DE 35 Tune is an ECU upgrade for the naturally aspirated 3.5-liter V6 engine, designed to deliver significant power gains across the entire RPM range. This software upgrade optimizes the engine's fueling and ignition timing for enhanced performance and responsiveness. Key features of this tune include improved throttle response, optimized fueling, and optimized ignition timing. When paired with the Weistec TCU tune, it can transform the overall drivability of your vehicle. The tune is utilized through the Cypher Handheld Tuner, allowing you to switch between your stock tune, the Weistec tune, and other available ECU tunes at any time. This ECU tune is compatible with various Mercedes-Benz models including C-Class W204 (2008-2014) C300 4-Matic and C350, E-Class W212 (2010-2016) E350 and E400 (both 3.5L and 3.0L variants), GLE Class W166 (2016-2019) GLE 400, GLE 43 AMG, and GLE 450 (3.0TT engines), GLK Class X204 (2010-2015) GLK 350 Blue, and SLK/SLC Class R172 (2011-2015) SLK 350 and (2016-2020) SLC 43 AMG (3.5L engines). Please note: This product is not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.