Catalytic converter

Standard CAT

A catalytic converter (colloquially, "cat" or "catcon") is a device used to reduce the toxicity of emissions from an internal combustion engine.

See Catalytic converter on Wikipedia for further information.

S1

Elise S1 catalytic converter

Pre-TF MGF's have the same cat as an S1.

S2

Elise S2 catalytic converter

The S2 CAT is different from the S1.

S2 Sports Cat

Elise S2 'Sports' catalytic converter

The S2 CAT is different from the S1. This is a 'Sports catalic converter with a 'flexi' section.