Quote Hillpower:
Catalytic Converter By-pass Pipe.
CBP14CL
Direct replacement straight through pipes allow exhaust gases to vacate the engine far quicker allowing better filing of the combustion chamber aiding engine pick up and power. (Vehicles registered after 01/08/92 require a cat for emission regulations). Supplied with mounting bolts.
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I have a J-Reg clio, which im pretty sure was registered 91, but will make sure, does that mean its legal for me to replace my cat with a striaght through pipe? also would my insurance company need to know?