CMW S58 Catless Downpipe

An S58 catless downpipe is an aftermarket performance part that removes the catalytic converter from the downpipe assembly. This allows the exhaust gases to flow more freely, reducing the backpressure and improving the exhaust flow, resulting in increased horsepower and torque output from the engine.

However, it's important to note that using a catless downpipe means that the vehicle will no longer have a catalytic converter, which is an emissions control device that reduces the amount of harmful pollutants emitted from the vehicle. This may cause the car to fail emissions tests or be deemed illegal in certain jurisdictions.

In addition to removing the catalytic converter, a catless downpipe may also require other modifications to your vehicle, such as an ECU tune and upgraded exhaust components, to achieve maximum benefits.