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[ POWER FIGURES REFLECT ECU TUNE PLUS DOWNPIPE ]
The Weistec M274 ECU upgrade for the 2015+ C300 provides gains across the entire powerband resulting a vehicle that is more fun to drive in all driving situations. The M274 ECU upgrade can be paired with our M274 Downpipe for further improved response and exhaust note
*Power gains vary based on model and modifications.
*Product may not be emissions compliant. Check local laws prior to installation.
- Increased HP and Torque
- Improved Throttle Response
- Optimized Fuel and Spark
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