It is well known that the Primary cats are a major restriction point on the E9X M3. There are a number of solutions on the market including a full X Pipe which removes the primary cats or Primary Cat Delete/Test Pipes.

Primary Cat Delete/Test Pipes are designed for those who do not want to go the full X Pipe route and are happy to modify their existing X Pipe. It is the most cost effective way of releasing power from this car.

Evolve’s Primary Cat Delete/Test Pipes were the first in the market to use a slip on and clamp solution. This provides a solid/tight fit without the need for welding. Claimed gains are 20bhp and 20lb/ft torque. An ECU Remap is required to remove CEL and provides an additional power gain over and above the test pipes alone. Please see video.

2x new gaskets are supplied.