pre-cat or secondary cat?

[battousii1991]

I replaced my stock y-pipe with racinglines y-pipe and my stock one has just been laying around, so i decided to take it to a scrap metal company and they said the catalytic converter on the y-pipe was a pre cat because of its size not its "location". It doesnt make sense to me why it would be a pre-cat. Has anyone brought their y-pipe in and got secondary cat price? anything helps!

[funkee]

A pre-cat is located ahead of the catalytic converter in the exhaust system, which reduces unburnt fuel and helps the main catalytic converters reduce emissions more effectively and last longer.

[DJ_B_Easy]

If Im not mistaken, our cars actually have 3 cats, the one in the Y-Pipe being the 3rd.