Cat question?

[///Bimmerfan]

I have a 86 325es and I thought it had two cats on it but I guess it doesn't so if it doesn't have two which one is the cat the one closes to the front of the car or the one closes to the back of the car?

[twright]

The cat is always closest to the engine. They work better the closer they are to the hottest gasses.

[jlevie]

The catalytic converter on this car is the large object on the down tubes just after they merge.

[///Bimmerfan]

On my car I have one under the heat shield underneath the car and like a foot down from that is another thing that looks like its another cat just before the muffler anyone know what I'm talking about???

[IRON-E]

On my car I have one under the heat shield underneath the car and like a foot down from that is another thing that looks like its another cat just before the muffler anyone know what I'm talking about???

I believe you're talking about a resonator.