Hi guys, I have full catback invidia exhaust on my car but seems kinda quiet for me. Would like alittle more sound.
Was looking into Catalytic Converters, and had a general question that I need help with. Does this mean I have to buy Invidia Catalytic Converter or can I go ahead and buy Magnaflow or an off brand catalytic converter to give me more of a louder deep sound?

Thanks.

I had a full Gemini exhaust on my G37 including Invidia HFC's and it had a great sound.

Audtatious,

Did you have any issues with the invisible HFCs? Have they held up? Did you have a CEL issue and if so did you solve it? Need to replace a cat and trying to decide if they are a good option versus the OEM cats.

Thanks