I would think if they really wanted to be nasty, they could call in that the truck had no cat. That whole tampering with emissions thing is going to start raising its ugly head more often, especially in cash-strapped states. Good luck getting one back on.
Thanks!
Removing the cat and placing a straight pipe hardly 'tampering'. Those that are hollowing out there cats and reinstalling, now thats trickery! :-laf
The cat's are very effeient and testing has shown only a 2-4 rwhp increase. . on a stock truck. When I removed mine the only benefit I saw was a quicker cool-down.
Diesel cat's aren't like automobile cats and really have little effect on smog producing gases.
If the truck is tuned (doesn't look like the OP is) the added soot/flow and decreased EGT's (of some tuners) is very hard on the cat and they can plug easier.
Cali models had a cat in 03-04, just not the 49 state version.
This is interesting, I've often wondered the specifics of a diesel cats function v a gasser. Also, wonder how much NOX, CO2 and other gasses a diesel actually discharges.
You're right not tuned, and if I stay in CA any longer, I might have to stick to the motobike!

what you don,t like clean air. put the cat on. how much power are you getting 3 hp. k
Love clean air! We'd actually have more of it if our trucks could be sootier since soot is a Solid particulate and falls back to the ground. Easier to sweep up, vacuum and contain IMHO

Mine is an '06 and I only "had" a DPF, muffler and resonator on mine from the factory. I had pulled all that stuff off about a year before this smog BS and am now running a complete straight pipe into a 6" stack. I passed with flying colors..... mind you I went to a place that knew this whole smog thing is a joke and honestly they didn't even look under the truck, only inspection was under the hood.Sorry, I will not name the place as I would like to return there and pass my next smog check. There culd b lurking CARB jack wagons searching on here... .....
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Originally Posted by KLauber Hey I must protest! SC has sunshine said:... and hurricanes and snowy, cold weather, A LOT more rainy days:-laf
Funny thing is I picked up the truck from a dealer, used in NYS. However, it originally came from NC!

JGheen, I sent you a pm...