High flow cats pass emissions
 

Will high flow cats pass an emission tests? The ones I am looking at (Solo) are not CARB certified. I am in WA state but we have the same emission laws as CA.

As far as I've heard, the only ones that will most likely pass are the Kooks Green Cats

I used to have a Magnaflow high flow cat on my old firebird and it passed inspection.. but I believe if there is no CARB sticker it probably won't pass..

No CARB #, no pass.




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If ur lucky u might get a lazy tech n just stair at ur camaro the hole time he might nt even look for any E.O numbers cuz ima a smog tech and there r techs out there that don't now what there looking at/for most of the time so ask around smog places n see how old these smog techs , younger techs won't now they'll just get ur car in and out

No aftermarket cats have a carb sticker.

Exactly what everyone said...No Carb #/Sticker, you will not pass!

JT

I didn't see a CARB sticker on my OEM cats either. How would a smog tech know the difference between a hi flow and OEM setup?

oem cats = 2 per side. HF cats = 1

I thought as of January there was no more sniffer?...:iono: Just an OBD reading.

Right, but how would they know that? Maybe its in a database when they look up the car?

Just read the "new" visual inspection criteria...cats must be in original configuration with the same number as OE unless CARB approved. High-flows = no goes!

You should be good for a few years and by then it depends on the place you go but definitely ask around before you go to a random shop. Most shops if busy wont take the time look unless your running Longtubes and no mufflers, to obvious....

Can you fail with no mufflers? Do mufflers affect the emissions in any way?