[cavi_rs_94]

Ok well I was wondering whats the difference between the Cavi (GM) stock CAT and a after market high flow cat.....Besides the obvious high flow part... what really is the difference? is there going to be an improvement in power or response with the car?

 

[budsz]

Any performance gains will be minimal. It will change the exhaust note slightly though.

 

[glacierstoscrape]

Yeah, basically the high flow has bigger openings in the honeycomb part I guess. It still does what it is supposed to as far as emissions, and the only real notice is in sound. It just sounds like you don't even have a cat.

 

[frank_ster]

the stock converters will react faster than after market ones jsut to have better emitions but who cares