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Aftermarket LEGAL Cats?

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26 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHAftermarket LEGAL Cats?

Leading reported evidence

Check during the state inspection

Suggestion or failed attempt

No successful repair reported for this finding.

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Unsuccessful attempts
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
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Suggestion

The state only requires that you pass the OBD2 plug-in check during the state inspection.

Aftermarket LEGAL Cats?
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Leading evidence: 'Check during the state inspection' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check during the state inspection' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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1 matching discussions · 26 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace failed cat

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

As far as replacing a failed cat.

Aftermarket LEGAL Cats?

Replace jobs

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

Have done nothing but brake and oil change jobs for a while.

Aftermarket LEGAL Cats?

Replace with the oem cat

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

you MUST replace with the OEM cat.

Aftermarket LEGAL Cats?

Run cleaner out of the pipe

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Has to be stock parts or CARB approved for it to pass, even if the mods make it run cleaner out of the pipe!!

Aftermarket LEGAL Cats?
Frequently discussed actions (6)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Check during the state inspection

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

The state only requires that you pass the OBD2 plug-in check during the state inspection.

Aftermarket LEGAL Cats?

Replace failed cat

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

As far as replacing a failed cat.

Aftermarket LEGAL Cats?

Replace jobs

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

Have done nothing but brake and oil change jobs for a while.

Aftermarket LEGAL Cats?

Replace with the oem cat

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

you MUST replace with the OEM cat.

Aftermarket LEGAL Cats?

Run cleaner out of the pipe

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Has to be stock parts or CARB approved for it to pass, even if the mods make it run cleaner out of the pipe!!

Aftermarket LEGAL Cats?

Use their cats/exhausts systems

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I know many people that do use their cats/exhausts systems on street cars which have no problems with passing an emissions test.

Aftermarket LEGAL Cats?
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

26 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T150039Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Do any of the aftermarket guys (Fabspeed, Awe, etc) make a quality cat that is also street legal? Sites are a little confusing and hoping that i can go aftermarket instead of again with the stock part. I have searched a bit and not able to get a definitive answer.

POST 2Original post

I don't think there is any legal attribute assigned to aftermarket catalytic converters. The state only requires that you pass the OBD2 plug-in check during the state inspection. My Fabspeed setup causes no inspection or emissions issues. HTH

POST 3Original post

Call Mike at AWE-tuning.com (site sponsor) he can tell you if legal or not, they are very helpful and honest. I know many people that do use their cats/exhausts systems on street cars which have no problems with passing an emissions test. Hope that helps,

POST 4 / ORIGINAL POSTEROriginal post

Thanks guys - these two companies seem to be the leading contenders for me. There is also MaxSpeed that trades on ebay a lot and they do offer pretty good prices - anyone work with them? They will end up bring about $600 less for the cats and muffler combo, but wondering if it is worth it given time in market/rep. Thoughts?

POST 5Original post

Aftermarket CATs are only illegal, visual inspection, in California.

POST 6Original post

Quotes source post: 7128680

Yep, that's CA's crappy crap laws in action. Has to be stock parts or CARB approved for it to pass, even if the mods make it run cleaner out of the pipe!! You would be forced to take it off and make it hurt the environment MORE for it to pass. Freaking bass ackward state...

POST 7 / ORIGINAL POSTEROriginal post

Okay cool so as long as they dont throw a CEL, then shoudl be good to go. Great news. Anyone try those MaxSpeed units or should i just go with Awe or FabSpeed?

POST 8Original post

Hi BillJ, PM sent with some information about the differences and member discount. Thanks,

POST 10 / ORIGINAL POSTEROriginal post

yeah had the guy that did my bumpers do it. Looks good. You can see it Saturday.

POST 11 / ORIGINAL POSTEROriginal post

Quotes source post: 7129073

Was that in response to the PM i sent you on Friday or just after you saw this thread? Will check it out.

POST 12Original post

In Calif. NO after market CATS are legal. Even moving the location of the cats is illegal. PITA State! Tony C

POST 14Original post

I would go with AWE over Fabspeed or MAX. What I have seen from Max is cheap stuff, get what you pay for. Some people havn't liked the sound of the Fabspeeds so I would suggest trying to listen to some, at a minimum they are available as sound clips on the internet, or better yet in person before you pull the trigger. I am sure both Fabspeed and AWE could suggest some possible customers that might let you hear their cars if they live close by. As for my personal taste in which sound I prefer, I like the AWE units for mufflers and cats. I also like their quality better.

POST 15Original post

Quotes source post: 7129749

This is a shame because the stock cats don't last very long! They seem to make it just out of the warranty period then the upstream catalyst breaks free and rattles around!

POST 16Original post

Quotes source post: 7129749

I have Cargraphic 200cell cats and my car passed SMOG. Not sure if Cargraphic cats have CARB # or the tech just didn't know what to look for?

POST 17Original post

Quotes source post: 7130667

The cats should be covered under the Federal Emissions law for 8 years/80K miles.

POST 18Original post

as said before, NO aftermarket cats are legal in CA. You may get by just fine because the SMOG station doesn't know any better, but technically ALL aftermarket cats are illegal. "Most" of the time in CA you can get by just fine because the SMOG guys don't know what's stock or not. I vote for AWE between your choices. Also, Cargraphic is good and warranties their cats for 2 years.

POST 19Original post

Ditto what eric523 said. You may pass smog but you would fail the visual inspection. If you get a station that knows what they are doing, they could fail you. As far as replacing a failed cat. you MUST replace with the OEM cat. only. Warranty is another issue. But only OEM'S are allowed.

POST 20Original post

Quotes source post: 7128401

consider fvd as well... they are the same cats as fabspeed except they are made for dual exhaust.....

POST 21 / ORIGINAL POSTEROriginal post

well - just as closure to the thread ended up going with fabspeed solution. getting cats, mufflers, and tips (quad - poser i know). Hoping that i like the sound and not expecting any real performance bump. Lifetime guarantee on the product and pretty agressive pricing helped with the decision as well.

POST 23 / ORIGINAL POSTEROriginal post

Yep and looking forward to doing this myself. Have done nothing but brake and oil change jobs for a while. Of course will be working on the Lemons car this weekend as well so have lots of wrenching ahead!

POST 24Original post

Hi Bill, fedex will be delivering the parts tomorrow, so it will be a perfect upgrade for the weekend. Give me a shout and let me know how it all worked out, enjoy it. Thanks,

POST 26Original post

My car passed with Fabspeed loud exhaust - headers and 100 cell cats. The inspector was looking under the front of the car for the cats!!!! I had to show him were they are.

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