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Old 08-05-2008, 07:06 PM   #1
Cautionjump
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Join Date: Dec 2006
Chapter/Region: South East
Location: Orlando, FL
Default Will I pass NC inspection with a catless downpipe?

Hi guys!
Im looking at going stage 2 Cobb, and was curious for anyone else in NC that is running with no cats had troubles passing smog.
Im running a skidplate, so they wont even be able to see under the engine, so I just worry about the smog.
And what about catless uppipe as well? Just curious how taking these off will affect ability to pass, since I dont feel like taking if off again.
And finally, anyone running a Vf34 in the area, since Id love to eventually go that route!!!

Thanks for the help, and this is for the 03 WRX obviously.
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Old 08-05-2008, 07:12 PM   #2
Glenn Hough
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Member#: 111276
Join Date: Mar 2006
Chapter/Region: South East
Location: Charlotte, NC
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2009 07 SWP WRX Wag
and 09 SWP Forseter XT

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They just plug into the OBD port, right? No more sniff test. If you have COBB AP -> no codes -> pass test. If they see no cat, then maybe a problem. Someone please correct me if I'm wrong here.
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Old 08-05-2008, 08:14 PM   #3
NC02Bugeye
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Location: Raeford, NC
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I'll ask someone at work, I haven't been here long but a lot of people at my job have been here awhile =p
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Old 08-05-2008, 08:18 PM   #4
scoobynewbie1
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wrb

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there is no more sniff test... as long as there is no check engine light, it'll pass the obd2 tester... techs are suppose to lift your car up and inspect for cats... if you can find somone that won't lift your car up like i did, then you are good to go...
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Old 08-05-2008, 08:57 PM   #5
rek888v2
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#169 and an 04 STi

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Ive passed with an AP for the past 4 years. Catless and never fails.... Have failed a visual oncxe though....
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Old 08-05-2008, 09:04 PM   #6
Bourque77
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blue cf hood blue wheels

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You will pass unless they decide to do a visual
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Old 08-05-2008, 09:28 PM   #7
Cautionjump
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Default

Hmm I was thinking they still did the sniff test with the OBD2. My last inspection had the emissions all broken down I believe... Ill have to check...
Visual shouldnt be a problem, with the SPT heatshield and intercooler you cant see down at the pipes, and with the skidplate you cant see up, and I doubt they would pull it off.
Thanks!
Eric
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Old 08-05-2008, 09:52 PM   #8
Superorb
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Hmm, I'm in the same boat too. I rushed another FL renew to put it off another year, btu I have catless and a skid plate, no codes from XPT map. I hope it's that easy.
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Old 08-05-2008, 11:02 PM   #9
AWDBoost
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Go to capital blvd.. Jiffy lube.. they are just toooo lazy to lift your car!
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Old 08-06-2008, 12:48 AM   #10
SPECTRE2099
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Do what I do and take it to a Jiffy Lube 10 minutes before closing time on a Saturday. I'm totally catless and have had no problems.
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Old 08-06-2008, 06:48 AM   #11
cucamelsmd15
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I too have had no problems.

However, if you are looking for a downpipe, Im thinking of selling mine soon.
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Old 08-06-2008, 09:27 AM   #12
smakdown61
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Quote:
Originally Posted by Cautionjump View Post
Hmm I was thinking they still did the sniff test with the OBD2. My last inspection had the emissions all broken down I believe... Ill have to check...
Visual shouldnt be a problem, with the SPT heatshield and intercooler you cant see down at the pipes, and with the skidplate you cant see up, and I doubt they would pull it off.
Thanks!
Eric
They can still fail you if they can't see it.
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Old 08-06-2008, 09:33 AM   #13
NCStateSTi
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Location: Greensboro
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2015 WRX
Dark Gray Metallic

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Quote:
Originally Posted by SPECTRE2099 View Post
Do what I do and take it to a Jiffy Lube 10 minutes before closing time on a Saturday. I'm totally catless and have had no problems.

Great f'n idea! I'm gonna try that this time, instead of takin down to the hood where I know they couldn't care less.

As for the visual inspection, you may be able to tell the guy your resonator is a cat, but if they have any sense, as far as O2 sensor goes, thatll blow up in ur face.
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Old 08-06-2008, 10:46 AM   #14
AWDBoost
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V7 EJ207
Prodrive GDB

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Lol this is what i have been doing for 5 yrs .. I take it to roxboro rd in Durham!! No lift at the shop..But like 5 Pitbulls!!!
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Old 08-06-2008, 11:01 AM   #15
legacy1907
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Location: Raleigh, NC
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05 WRX CGM
95 YJ Flat black

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Quote:
Originally Posted by Cautionjump View Post
Hi guys!
Im looking at going stage 2 Cobb, and was curious for anyone else in NC that is running with no cats had troubles passing smog.
Im running a skidplate, so they wont even be able to see under the engine, so I just worry about the smog.
And what about catless uppipe as well? Just curious how taking these off will affect ability to pass, since I dont feel like taking if off again.
And finally, anyone running a Vf34 in the area, since Id love to eventually go that route!!!

Thanks for the help, and this is for the 03 WRX obviously.
I passed catless up/down pipes. I also run a vf34
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Old 08-06-2008, 12:16 PM   #16
GreenMarine
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Silver

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I passed inspection 2 years ago with completly shot CATs... And when I say "completly shot" I mean the ceramic material came out in chunks when they were cut out of the exhaust... ... No problems passing anymore with my Metallic substrate CATs

~ Chris
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Old 08-06-2008, 12:18 PM   #17
Superorb
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Quote:
Originally Posted by AWDBoost View Post
Lol this is what i have been doing for 5 yrs .. I take it to roxboro rd in Durham!! No lift at the shop..But like 5 Pitbulls!!!
I was waiting for someone to find a shop w/o a lift

There's still the issue of me passing an eye exam for my NC license...
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Old 08-06-2008, 03:10 PM   #18
smakdown61
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Quote:
Originally Posted by GreenMarineSVX View Post
I passed inspection 2 years ago with completly shot CATs... And when I say "completly shot" I mean the ceramic material came out in chunks when they were cut out of the exhaust... ... No problems passing anymore with my Metallic substrate CATs

~ Chris
With an obd1 car you can shoot dog **** out the exhaust and they still have to pass you as long as you have no CEL and there is something resembling a cat underneath (assuming they check).
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Old 08-07-2008, 11:25 AM   #19
DustinTarditi
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Vehicle:
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White

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I run a Stage2 Cobb 93 Oct map with Cobb CBE and Injen Catted DP

The low-restriction cat keeps you legallay running w/ a cat.

The design of the stock DP itself is as much of an issue as the cat - lots of restrictive bends and a blocking plate where it comes off the turbo - Injen and Cobb designs are both bellmouth.
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Old 08-07-2008, 09:09 PM   #20
nuggetWRX
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Sport Wagon

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i dont know about all the technical OBD emissions here in NC (i mean i'm running an STi factory cat-back on my 2.5i Wagon, shouldnt be a problem) but maybe you could gut the cat and weld it back up so it looks like it has a cat but actually is hollow. my only concern then would be noise ordinance violations :-D
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Old 08-07-2008, 10:39 PM   #21
4wdrift
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99 RBP GC8 Impreza

Impreza GC8

Quote:
Originally Posted by AWDBoost View Post
Lol this is what i have been doing for 5 yrs .. I take it to roxboro rd in Durham!! No lift at the shop..But like 5 Pitbulls!!!
WIn!!

That's the funniest ish i've heard all day. Sad, in a pitiful sort of way, but funny!
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Old 08-07-2008, 11:43 PM   #22
GreenMarine
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Quote:
Originally Posted by smakdown61 View Post
With an obd1 car you can shoot dog **** out the exhaust and they still have to pass you as long as you have no CEL and there is something resembling a cat underneath (assuming they check).
Oh yeah, that's right... I forgot the last time I was tested for emmissions was in 2005... Haha, now it's just a safety inspection for me... Speaking of which, I've gotta go get that done

~ Chris
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Old 08-08-2008, 09:30 AM   #23
Braz
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CGM

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i'm fully catless, and had a bit of difficulty when i had my cel-fix wired in. Even if my CEL was not on, the voltage reading off the rear o2 sensor was too low. After removing the wired fix and installing a mechanical fix there was no problems. I imagine if you tune it out there wont be any problems.
Also if you've reset your ECU within the past 120miles or so it can throw an unready code.
I've yet to fail for there visually being no converter in NC.
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Old 02-07-2017, 02:01 PM   #24
JohnFXT05
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Say, how often are the inspections.. (once a year)?
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Old 02-07-2017, 03:03 PM   #25
subezero
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Chapter/Region: South East
Location: Charlotte, NC
Vehicle:
2008 WRX Hatch VF52d
SSM

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8.5 year thread bump, nice. Yes once a year.
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