So I had a CEL on my 2011 Sedan. It has 110k miles. The CEL has been intermittent. I changed the Spark plugs and PCV Valves, but the CEL was for the bank 2 Catalytic Converter. I DO NOT want to spend $900 on a new one, so I'm considering doing high flow cats. I have stock exhaust and will probably only at some point to an Axle back set up. Not interested in breaking the bank so any suggestions? I saw Top Speed, Kinetic and FI. I dont mind having some extra sound either

 

I just removed my fast-intentions non resonated high flow cats to install ISR test pipes...

These are what I had

https://www.fastintentions.com/product_info.php/cPath/41_50_67_139/products_id/119

Message me if you are interested.