LSfan70s

I'm putting a LQ9 on a Trailblazer and can't figure out which cats to use.

It's a budget project, PCM will have stock programming just the VATS removed, and it has to pass a yearly smog test. Not as strict as CA.

Would used re-certified cats be a good option?

What would be a good aftermarket cat for this kind of project?

Thanks in advance for any advice

Grimes

iTrader: (3)

People tend to like these, not sure if you want to adapt it to your current exhaust tubing size.


http://www.summitracing.com/parts/mpe-59959/overview/

MadFirehawk86

iTrader: (2)

I second that. If you want a quality high flow cat I'd get that one. If your conversion will still retain all of the emissions components you will pass a sniffer test just fine.