Long tube headers and cats, possible???? - Third Generation F-Body Message Boards

globalco · 06-02-2005, 03:55 AM

I live in So. Cal and need to go the legal route. These long tube headers look sweet and sound sweet but how can I use them with a dual cat system?

I have seen a custom set up but CARB says no monkeying with exhausts and cats here.

Is there a way to run lth and still pass the tests???

thanks

Jim

firebirdjosh · 06-02-2005, 12:34 PM

I'm about to find out this week...

90-irocdx3 · 06-02-2005, 12:46 PM

legally you can't pass with longtubes in california only the shorties with carb numbers on the header itself, and they do look under your car too. However when i get my car smogged i am taking it to a person that will pass it for me.

GOY · 06-02-2005, 12:53 PM

I don't know about california, but I'm just plan on slapping some cats 2-3 inches behind the headers themselves..... clamp on of course "In case they need to be removed for testing"

globalco · 06-03-2005, 02:44 AM

Anyone else have anything to add to this? I think long tube sound great, but how much hp and torque are we talking about to fly under the CARB radar screen?

Jim