Capristo 250-cell sports catalytic converter downpipe for Mercedes AMG CLS63 W218 2010 - 2018 02MB01503017

These high-performance downpipes feature Cat Sport's 250-cell-per-square-inch substrate, made from the highest-quality materials available today, designed to improve airflow for your vehicle's turbocharged engine and increase performance.

The cell count of a catalytic converter substrate refers to the number of holes per square inch and is a direct indication of the flow capabilities of that substrate. The fewer the holes, the larger the hole must be to fill a square inch; a larger hole subsequently flows more exhaust gas.

All that high flow won't help if the substrate is "squeezed" into a container or small-diameter pipe. For this reason, CAPRISTO sport cats come in 5.2-inch packages to maximize exhaust gas flow and valved exhaust system operation.

The CAPRISTO valved exhaust system helps low-end torque by providing exhaust backpressure and increases temperature for proper catalytic converter operation. In the high-rpm open-valve condition, it takes full advantage of the free-flow characteristics of the CAPRISTO Sport Cats by optimizing the high-energy exhaust at the ideal temperature and backpressure to maximize performance.

These catalytic converters can be easily retrofitted to a CAPRISTO exhaust system or any system that fits directly over the OEM exhaust.

*Recommended for off-road and track use only*

Replacing the OEM catalytic converter may activate a CEL (Check Engine Light).

To disable a recurring CEL, you will need to tune the ECU or use 02 sensor extensions.