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Old 01-19-2009, 01:29 PM   #1
vette4db
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Default Header, smog test?

Will my 08 Z06 pass smog if I installed headers?
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Old 01-19-2009, 01:37 PM   #2
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The basic rule is that the aftermarket parts have to be CARB approved. There are long-tube headers that have been so approved for the C5. It is an expensive process for the manufacturer.
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Old 01-19-2009, 01:54 PM   #3
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The basic rule is that the aftermarket parts have to be CARB approved. There are long-tube headers that have been so approved for the C5. It is an expensive process for the manufacturer.
Thanks for the info!
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Old 01-19-2009, 02:36 PM   #4
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The basic rule is that the aftermarket parts have to be CARB approved. There are long-tube headers that have been so approved for the C5. It is an expensive process for the manufacturer.
Please give me the name of one set of long tubes that are CARB approved for the C5.
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Old 01-19-2009, 02:42 PM   #5
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If you get a catted set it should pass the sniffer but it will not pass the visual, but a lot places will look past that. And no there are not any long tubes that have a CARB number only shorties which are a waste for the money.
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Old 01-19-2009, 02:58 PM   #6
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If you get a catted set it should pass the sniffer but it will not pass the visual, but a lot places will look past that. And no there are not any long tubes that have a CARB number only shorties which are a waste for the money.



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Old 01-19-2009, 04:35 PM   #7
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show me to
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Old 01-19-2009, 04:37 PM   #8
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But if you get pulled over frequently like me and told to open the hood then I would need ALL c.a.r.b. approved parts. Ive had a car towed cause the cops were dicks after being pulled over for non c.a.r.b. parts on them so it aint gonna happen with the Vette. The shorties are better than stock and legal for me not to be hassled.

If I want 35 more rwhp without headers ill just drop another pulley size on the head unit.

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Old 01-20-2009, 03:38 PM   #9
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Mid America Motorworks: Item 622-917: Ceramic-coated long-tube headers,Random Technology x-pipe and high-flow cats. CARB-approved,about $1900.
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Old 01-20-2009, 03:50 PM   #10
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Mid America Motorworks: Item 622-917: Ceramic-coated long-tube headers,Random Technology x-pipe and high-flow cats. CARB-approved,about $1900.
Those are NOT CARB approved. Show me where it says they are. From RT's website: "Please note that aftermarket catalytic converters are not legal for installation in California on OBD II vehicles (some 1994 & 1995, and all 1996 and later vehicles)."

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Old 01-20-2009, 03:52 PM   #11
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Quote:
Originally Posted by Redneck Slim View Post
Mid America Motorworks: Item 622-917: Ceramic-coated long-tube headers,Random Technology x-pipe and high-flow cats. CARB-approved,about $1900.
Here's a direct link to the headers you listed so others can check for the CARB approval...

http://www.mamotorworks.com/corvette...=1.4247.622917
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Old 01-20-2009, 03:56 PM   #12
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Quote:
Originally Posted by doje View Post
Those are NOT CARB approved. Show me where it says they are. From RT's website: "Please note that aftermarket catalytic converters are not legal for installation in California on OBD II vehicles (some 1994 & 1995, and all 1996 and later vehicles)."

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Old 01-20-2009, 04:00 PM   #13
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Quote:
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Those are NOT CARB approved. Show me where it says they are. From RT's website: "Please note that aftermarket catalytic converters are not legal for installation in California on OBD II vehicles (some 1994 & 1995, and all 1996 and later vehicles)."

Read the catalog. Or call the company.
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Old 01-20-2009, 04:13 PM   #14
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Read the catalog. Or call the company.
I literally just got off the phone with Dave at Random Technology. After he stopped laughing, he said...

"Whoever told you that should stop mixing their prescription medication. There are currently no long tube haeders that are CARB approved." He went on to say, "There probably never will be because of regulations that require cats to remain located in the original position and the pipe diameter between the engine and the converters to remain the same as stock."

If you don't believe me, call Dave at RT yourself 770-554-4242

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Old 01-20-2009, 04:45 PM   #15
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"Hi-flow design 2 3/4" Catalytic Converters (pr) meet Federal EPA and California ARB requirements." That is an exact quote from Mid America's catalog. The salesman at Mid America this morning told me that the package comes with a CARB certificate that covers all C5s.

Last edited by Redneck Slim; 01-20-2009 at 04:50 PM.
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Old 01-20-2009, 04:48 PM   #16
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Quote:
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"Hi-flow design 2 3/4" Catalytic Converters (pr) meet Federal EPA and California ARB requirements." That is an exact quote from Mid America's catalog. The salesman at Mid America this morning told me that the package comes with a CARB certificate.
The CATS may be carb approved, but the LONG TUBE HEADERS are not. Your salesman at MAM is steering you wrong.
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Old 01-20-2009, 05:59 PM   #17
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The problem is not the cats themselves, but the relocation downstream from the factory position that makes the long tubes illegal. Federal law prevents any movement of the cats from the factory location.

You will never see a true long tube with CARB approval unless they re-word the law and one of the big boys spends a lot of cash to get the approval. And even then they would likely be forced to use a lower flowing cat then the factory provides.

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Old 01-20-2009, 06:46 PM   #18
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My C5 has the long-tube headers sold by Mallett in 2002,and the stock cats are in their stock locations. I think the big problem is pre-cats;fortunately,many C5 models/years came without them.
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Old 01-20-2009, 07:25 PM   #19
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Quote:
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My C5 has the long-tube headers sold by Mallett in 2002,and the stock cats are in their stock locations. I think the big problem is pre-cats;fortunately,many C5 models/years came without them.
Do I need to call Mallett and post up their response as well? THERE ARE NO LEGAL LONG TUBE HEADERS FOR A C5 CORVETTE IN THE STATE OF CALIFORNIA. PERIOD.

Give it up.
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Old 01-20-2009, 08:59 PM   #20
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I didn't say that my headers are legal;I was responding to fej's comment about moving the cats. The point is that CARB-legal long-tubes could be made for C5s that come without pre-cats.
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Old 01-20-2009, 08:59 PM
 
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