California Smog and High Flow Cats

[dplyttle]

Has anyone installed high flow cats and been able to smog their Camaro? I have a 2010 2SS A6 and would like to upgrade but reluctant due to militant smog regulations. I understand that I have some time before needing to smog but would love to avoid the hassle of uninstalling then re-installing.

Thanks for the input!

[tribone]

Originally Posted by dplyttle

Has anyone installed high flow cats and been able to smog their Camaro? I have a 2010 2SS A6 and would like to upgrade but reluctant due to militant smog regulations. I understand that I have some time before needing to smog but would love to avoid the hassle of uninstalling then re-installing.

Thanks for the input!

I have JBA Long Tube and High Flow Cats but I haven't had the need to smog it yet. I believe we have 2 more years for the 2010's.

[erk5000]

I have JBA high flow cats, Doug thorely cat back, Dynomax mufflers, & a tune. I passed my smog test here in Oceanside, CA. I told the inspector what I had in my car before hand. He said he would do a friendly smog check for free & if it fails then I'd have to go fix the problem and not pay for the smog check. If I pass then I pay and smog check is complete.

[tribone]

Originally Posted by erk5000

I have JBA high flow cats, Doug thorely cat back, Dynomax mufflers, & a tune. I passed my smog test here in Oceanside, CA. I told the inspector what I had in my car before hand. He said he would do a friendly smog check for free & if it fails then I'd have to go fix the problem and not pay for the smog check. If I pass then I pay and smog check is complete.

[SBMARO'11]

u gotta know the right ppl who know ppl to pass ur smog for a good price!

[erk5000]

Originally Posted by SBMARO'11

u gotta know the right ppl who know ppl to pass ur smog for a good price!

I only paid $40 for mine.

[Truck Norris]

Some high flow cats wont pass the sniffer test in CA and are sub-par compared to the factory units.

[dplyttle]

Thanks for the info! I appreciate all the help.

[JohnnyComeLately]

Passed with JBA hi flow cats on my 97 Trans Am. I'd imagine with a carb number for their shorties, their cats should be good. (no sense making clean headers and selling dirty cats)

[Synerbee]

Originally Posted by JohnnyComeLately

Passed with JBA hi flow cats on my 97 Trans Am. I'd imagine with a carb number for their shorties, their cats should be good. (no sense making clean headers and selling dirty cats)

High flow cats are made to be less restrictive for more hp but in return it allows more smog to pass through. It is not that that they are "dirty"

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[ApexedSS]

So if i bought a 2010 2 months ago that was used from a dealer, when will i have to get it smogged?

[Synerbee]

5 years from day it was orginally bought

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[JohnnyComeLately]

Originally Posted by Synerbee

High flow cats are made to be less restrictive for more hp but in return it allows more smog to pass through. It is not that that they are "dirty"

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Maybe I m being too simplistic but I'm using the terms in a black and white sense.

Dirty = no CARB
Clean = CARB approval

Other than trying to maybe get out of tuning an ECM !cats, I don't see much reason to make high flow cats that fail smog. If I don't care about running clean, I'll skip the high cost of cats, throw in sims and/or tune to ignore. If I do care, then I'll keep looking for cats with a high flow capacity that do pass. Hence my statement that if JBA thought it important enough to spend considerable time and money on CARB certs for their Shorties, then they likely spent time making compliant cats. So again, not much sense making legal headers and only illegal cats. The original question is: do their cats pass, so I think it's a valid observation.

However I could be wrong. I know in my case, high flow cats passed the sniff test. The only issue was my "nitrous" on the visual. I actuality the "nitrous" was my braided line for the boost gauge...which laughingly went to a plastic vacuum T...hardly the connection associated with several hundred psi.

[Nessal]

I think the sniffer test will be a thing of the past. Last I heard, they are going to switch to just OBD testing. They will plug their computer to your OBD port and if all the readiness test are ok then you are good to go.