cat converter question help!

[bushy]

Hey guys I'm hoping this is an easy answer. I have an 03 rsx base. I'm looking to get a high flow cat for my cat because I bought an exhaust system. Before I get a different cat I was wondering the size cat I sgould buy. 2" , 2.25" , or 2.5". I bought the buddy club spec 2 exhaust and was told by the comapany its a cat back. Just let me know looking for a universal cat I can buy relitivley cheap that will work with stock headers and this new echaust. Thanks let me know asap!

 

[OGstackadoIIa]

As far as I know, header>cat>exhaust should all have the same diameter piping

 

[Jayteg]

I don't run a cat on my car /removed

 

[OGstackadoIIa]

Yee, my girl doesn't run a cat either. The fumes are a bit much, and you better cut the engine if you get pulled over. Last thing you want is the cop becoming suspicious of the smell of unburnt fuel from the exhaust

 

[Muckman]

Run ethanol, it doesnt smell bad.

OP, get the biggest cat available. You want as much surface area possible to reduce flow restriction.

 

[bushy]

Thanks guys where I live its a 5grand fine for no cats so I'm gonna definately run one but do you know the piping diameter then?

 

[1998GSRgrunt]

Measure twice. Purchase cat once.