CTS Turbo Mercedes-Benz M177/W213 E63S High-Flow CATS

CTS Turbo's high-flow catalytic converters are precision-engineered for the Mercedes-Benz M177 twin-turbo V8 found in W213 E63 and E63S models from 2017 through 2020, plus AMG GT 63 variants. These performance catalysts drastically reduce exhaust restriction compared to factory units, allowing the turbos to spool more efficiently while maintaining emissions compliance. The direct-fit design ensures straightforward installation without modification. Ideal for tuned applications where factory cats become a bottleneck, these high-flow units work seamlessly with ECU calibration to extract additional performance from the M177 platform.