[ 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 Downpipes for further improved response and engine feedback.??
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*Power gains vary based on model and modifications.
*Product may not be emissions compliant.? Check local laws prior to installation.?
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