Can i pass emissions test with high flow cats? - Mustang Evolution

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Old 01-14-2015, 12:49 PM   #1
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Can i pass emissions test with high flow cats?

Can i pass a california emissions/smog test with the high flow cats on american muscle? i have a 2014 v6 btw.

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Old 01-14-2015, 12:51 PM   #2
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Granted, this is a different platform, but i have had experiences where even high flow cats will outflow the stock cats by enough to trigger a CEL. To turn the CEL off in the tune it will register as a "Not Ready" code on your inspection.

In Texas, we are allowed 1 "not ready" code, so i can pass while catless. In Cali however, i know they are much more strict.
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Old 01-14-2015, 03:36 PM   #3
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I had some Berk HFC's on my 350z and I passed. Was I supposed too? Dont know but it did. Maybe I got lucky. Test first then put them on.

Wait you have a 2014? You wont need to smog it until the 7th year if Im not mistaken.
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Old 01-14-2015, 03:41 PM   #4
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If youre the original owner read this...

Smog Inspection Exemptions

If your vehicle is 6 years old or less, you do NOT have to have your vehicle smog checked every 2 years. Instead, you’ll pay an annual $20 smog abatement fee for your first 6 years of registration. After these first 6 years, you will be subject to the regular smog check program
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Old 01-14-2015, 04:27 PM   #5
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Originally Posted by Socal Stangman View Post
If youre the original owner read this...

Smog Inspection Exemptions

If your vehicle is 6 years old or less, you do NOT have to have your vehicle smog checked every 2 years. Instead, you’ll pay an annual $20 smog abatement fee for your first 6 years of registration. After these first 6 years, you will be subject to the regular smog check program

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Old 01-14-2015, 04:42 PM   #6
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Originally Posted by Socal Stangman View Post
If youre the original owner read this...

Smog Inspection Exemptions

If your vehicle is 6 years old or less, you do NOT have to have your vehicle smog checked every 2 years. Instead, you’ll pay an annual $20 smog abatement fee for your first 6 years of registration. After these first 6 years, you will be subject to the regular smog check program

This is THE BEST information I've ever read lol thank you sir b


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Old 01-14-2015, 04:50 PM   #7
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It's crazy, a lot of people don't know about this. I bought a Nissan Maxima in 07 brand new. Modded the hell out of it and put 105,000 miles on it in a little over 6 years. Never even smogged it once.
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Old 01-14-2015, 05:14 PM   #8
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in all states or just cali cause im in tx and its no long tube headers here.
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Old 01-14-2015, 05:38 PM   #9
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in all states or just cali cause im in tx and its no long tube headers here.
I dont know about that. a quick google search will answer your question.

Dont mistake what Im saying though, that stuff is still illegal here. The smog shops and the DMV might not know but the cops still could. My co-workers son a modded Miata. Hes a kid so he did some stupid stuff to it. He lives in San Diego and was pulled over the other day for a "loud exhaust", the cop pretty much looked at everything on the car. He opened the hood and even looked underneath it. He didnt have anything really bad on it so the cop gave him a warning. You start messing with cats and doing long tubes, you will get your car impounded for sure.
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Old 01-14-2015, 06:26 PM   #10
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so should i just go catless then? or will that make the car smell bad, mess with the 02 sensors, or other bad stuff?
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Old 01-15-2015, 08:59 AM   #11
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naw don't remove the cats it will smell bad probably burn your eyes a bit, and not pass emissions for sure. here in tx dont think its the same as cali but i passed my emissions test with pipes high flow cats on my 2004 and 2.5 inch piping idk if that helps?
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Old 01-15-2015, 10:40 AM   #12
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Even if you don't plan to keep your car more than 5 years, you'll be on the hook to have it smog checked if you sell it, even if it's too new to yet require the bi-annual inspections. I wasn't aware of any $20 smog abatement fee for the first 6 years in California at least. I'll have to have a look at my latest registration to see if it's there.
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Old 01-15-2015, 11:56 AM   #13
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naw don't remove the cats it will smell bad probably burn your eyes a bit, and not pass emissions for sure. here in tx dont think its the same as cali but i passed my emissions test with pipes high flow cats on my 2004 and 2.5 inch piping idk if that helps?
It's not as bad with these new engines. I run catless and while the exhaust definitely smells richer, it's not overpowering.

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Old 01-15-2015, 12:34 PM   #14
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Just call or email the manufacturer and ask if they are CARB compliant.
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Old 01-15-2015, 01:18 PM   #15
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Just call or email the manufacturer and ask if they are CARB compliant.

There are so few after market parts that have a CARB number. I would pretty much assume that anything you want to do is not CARB compliant.

I was talking to one of the guys at BBK and he was saying that their CAI is getting close to getting a CARB cert. That would be nice for us here in Cali.
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Old 01-16-2015, 07:00 AM   #16
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It's not as bad with these new engines. I run catless and while the exhaust definitely smells richer, it's not overpowering.

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i think it makes my car smell fast
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Old 01-16-2015, 09:01 AM   #17
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my eyes they burn!!!!
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Old 01-16-2015, 09:46 AM   #18
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my eyes they burn!!!!
If your eyes burn from that, never go to the track lol. Race fuels are a hell of a lot stronger.

They smell good in my opinion though haha

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Old 01-16-2015, 11:35 AM   #19
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im just kidding i love the smell of gas and pollutants and dont give about global warming, just like our 60's forefathers why you think i didnt buy a prius.
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