Stainless steel 250 cell sport catalyst downpipe capristo nissan gtr mk3/5/nismo 02NI09503019

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

All that high flow won't help if the converter is "squeezed" into a can or pipe that's too small in diameter. For this reason, CAPRISTO Sports Cats are packaged in 5.2-inch packages to maximize exhaust flow and valved exhaust system operation.

The CAPRISTO valved exhaust system helps with low-rpm torque by providing exhaust backpressure and increases temperature for proper catalytic converter operation. While 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 exhaust pipes can be bolted to our CAPRISTO exhaust or your stock system.

Recommended for off-road and track use only

Replacing the OEM catalytic converter(s) may cause a CEL (Check Engine Light) to occur.

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