2005 Lotus Elise S2 OEM exhaust and catalytic converter from 30k mile car
This catalytic converter worked well (no codes) when I removed it from my car, just prior to lifting a valve.
I have then converted to a 2.0l 2ZZ-GE with RevX supercharger, Emtron ECU, BOE header and Coast Fab/Burns custom 3" through 2-stage muffler (from Fred at Blackwatch) and will never be able to use the OEM header, cat, and muffler again.