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CARB legal downpipe

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Old 04-20-2009, 08:18 PM
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CARB legal downpipe
Does anyone make a CARB legal downpipe for the 04 STi?
CARB legal meaning it has an EO#
I know there are a lot of catted downpipes, but best I can tell none of them have official CARB exemption.

Anyone?
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Old 04-20-2009, 08:21 PM
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None, beside your stock oem is carb legal.
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Old 04-20-2009, 08:21 PM
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Any modification to the emissions devices is illegal.
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Old 04-20-2009, 08:24 PM
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Old 04-20-2009, 08:24 PM
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No - there is lot of Carb legal stuff; tons of headers and such for American cars; I'm surprised no one has done this for the subies
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Old 04-20-2009, 08:27 PM
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Originally Posted by Lowend
No - there is lot of Carb legal stuff; tons of headers and such for American cars; I'm surprised no one has done this for the subies
emissions devices=cats

Therefore, you cannot legally modify/replace the cats. Even if you replace the cat with a better filtering one, it is still illegal. No one said Cali laws made sense.
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Old 04-20-2009, 08:40 PM
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what he said
you can get away with a catted DP and pass visual and the sniffer but it will still be illegal
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Old 04-20-2009, 08:54 PM
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Originally Posted by PikkaGTR
what he said
you can get away with a catted DP and pass visual and the sniffer but it will still be illegal
you could pass sniffer, but if you had a tech that knew what they were doing, you'd fail the visual
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Old 04-20-2009, 10:43 PM
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I know I know
I meant one of those "Friendly" ones...
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Old 04-21-2009, 08:13 AM
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Originally Posted by scoobie8
None, beside your stock oem is carb legal.
BAR and CARB got together to make it even harder now

now OBD I cars have to have to have OBD II cats on them
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Old 04-21-2009, 08:29 AM
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Originally Posted by VRT MBasile
you could pass sniffer, but if you had a tech that knew what they were doing, you'd fail the visual
The best I have come up with so far, is to run the perrin 2 piece downpipes, weld the 2 sections together (tig) then take the stock shields off the stock downpipes. Run them in a English wheel to stretch the metal out and make it fit the new 3" pipe and rivet them on.

The only way at that point anyone would know, is to rip the shields off.
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Old 04-21-2009, 09:17 AM
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wow sounds like a lot of work

tac the heat shiled on and just plasma it out bigger to fit teh 3 inch?
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Old 04-21-2009, 09:22 AM
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Originally Posted by sigma pi
wow sounds like a lot of work

tac the heat shiled on and just plasma it out bigger to fit teh 3 inch?
Thought about that, played around with a spair shield I pulled from a junker. Too thin and would show the marks. When I ran it on the wheel I got a nice smooth look that with a little work was "stock" as can be.

also the tig weld is important so the joint/gasket wont fail down the road. I would more than likely wrap the whole pipe before I bolted on the shields to hide the bright polish.
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Old 04-21-2009, 09:30 AM
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Old 04-21-2009, 09:37 AM
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Good days are over with all these CHP now looking really hard to pull us over. Put those cats back on.
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