Quote:
Originally Posted by EpicNameBro
The secondary is mainly there to clear up whatever the primary didn't get in terms of breaking down gases etc. It's not there to monitor anything it just acts as a second filter once the car is warmed up. Essentially creating a fail safe for a car to meet the strict emission laws...
|
Yes, that is understood. But I wonder what differentiates a secondary cat from a primary cat technically/internally? Is it different catalysts? Less catalysts?
If you call an exhaust shop to replace a secondary cat due to failure or whatever, do they just slap on a universal regular cat in its place, or do they have special cats used only in the secondary position?
My goal in this is to determine a functional fix to losing the primary cat that was in the factory header. My possible solutions are:
1. Use the oem secondary cat as the primary, relocating the o2 sensors before and after it.
2. Have the oem secondary cat replaced with a 'primary' cat at an exhaust shop, and have the o2 sensors relocated before and after it.
This question might be best answered by a shop that specializes in exhaust systems (performance shop, not Meineke\Midas etc).