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Old 12-25-2006, 11:10 PM   #1
azscooby
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Default ?'s for AZ emissions....

I'm looking to complete my tbe by adding uppipe and downpipe to my Greddy sp2 (I think, Greddy something, very quiet.)
My question is whether or not you guys have had any emissions problems by going completely catless? I do want to get a catted downpipe, don't want to completely destroy the environment, and I hear they aren't nearly as loud (good thing for me, don't really want increased exhaust volume than I already have.)
Is my exhaust volume going to increase substantially with an uppipe and catted downpipe? What about catless, noise wise, emissions wise?
Any suggestions for brands that won't have emissions issues?
I'd like to take a look/listen to some of your setups before I take the plunge and spend some Christmas dough.

Thanks all...
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Old 12-25-2006, 11:54 PM   #2
taerron
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i'm wondering the same thing too. i'll be up for emissions in jun 07. maybe the people with the engine swaps can help out on this
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Old 12-25-2006, 11:58 PM   #3
06STi
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Get a APS system. You can swap cats in and out.
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Old 12-26-2006, 12:02 AM   #4
taerron
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i have a catted dp. u think i need another one?
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Old 12-26-2006, 12:16 AM   #5
06STi
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Do you have the catted up pipe still?
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Old 12-26-2006, 12:22 AM   #6
wagonmasta
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+1 for APS
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Old 12-26-2006, 04:16 AM   #7
dozer54321
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i have to go through emmissions in january, i am all catless, so i am going to attempt to take a run through as is, ill let you all know how goes it
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Old 12-26-2006, 05:29 AM   #8
ChrisL2
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It really depends. Since your car is post 96, they might just do the OBDII test. No codes mean you pass.

However, if it sounds loud, etc, they might actually do a check for cats.

Linky to testing information:
http://www.azdeq.gov/environ/air/vei/tech.html
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Old 12-26-2006, 09:07 AM   #9
dubya05
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+1 for being able to switch out cats on the APS system but im not that much of a fan of the APS DP. cast iron elbow off of the turbo is way too heavy and a pain. Cast iron (turbo hot side)to cast iron 9APS dp elbow) tends to "weld" turbo bolts together.
<- victim of broken turbo exhaust stud.
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Old 12-26-2006, 09:07 AM   #10
06 Scooby
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06 uppipe FTW!!
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Old 12-26-2006, 10:40 AM   #11
pudnana
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Quote:
Originally Posted by azscooby View Post
I'm looking to complete my tbe by adding uppipe and downpipe to my Greddy sp2 (I think, Greddy something, very quiet.)
My question is whether or not you guys have had any emissions problems by going completely catless? I do want to get a catted downpipe, don't want to completely destroy the environment, and I hear they aren't nearly as loud (good thing for me, don't really want increased exhaust volume than I already have.)
Is my exhaust volume going to increase substantially with an uppipe and catted downpipe? What about catless, noise wise, emissions wise?
Any suggestions for brands that won't have emissions issues?
I'd like to take a look/listen to some of your setups before I take the plunge and spend some Christmas dough.

Thanks all...
If I remember correctly, according to Arizona or Federal law, you're not supposed to change your cats at all unless the current ones on the car are found to be defective. And when they are defective and must be changed, it needs to be with a "OEM quality" cat. There for if you go to emissions, and have a visual check, you COULD get busted. No cats is a pretty big fine too.
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Old 12-26-2006, 11:18 AM   #12
azscooby
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Yeah, that's what I'm worried about. I know my other post '96 cars just get OBDII scanned, no sniffers, no visual checks.
Even when I bought the car with CA plates, the DMV guy never bothered to look at anything other than matching VIN#'s - and it had a catback exhaust, but it was very quiet.
Quote:
And when they are defective and must be changed, it needs to be with a "OEM quality" cat.
So even if you put a "high flow cat" it might not matter?
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Old 12-26-2006, 11:21 AM   #13
azscooby
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from the above link....
Quote:
Tampering: In addition to one of the above tests, a vehicle may undergo a visual inspection to determine the presence of certain emission control components as installed by the manufacturer. Inspection includes catalytic converter, operational air pump, positive crankcase ventilation system and evaporative control system. These inspections coupled with the evaporative system integrity (pressure) test constitute the tampering inspection.
So is that a +1 for a gutted system? I know the gutted uppipe has similar gains to a manufactured uppipe, what about the dp?
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Old 12-26-2006, 11:58 AM   #14
racingfish
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i know someone who went to get their wrx tested... he has no cats and passed.

hope that answers your question....

1. they dont do a visual
2. they dont do a sniff
3. your allowed 1 ready light
4. they only check if your have a cel showing
5. they will spot check a car by throwing it on the dyno (2wd)
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Old 12-26-2006, 02:41 PM   #15
pudnana
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Quote:
Originally Posted by azscooby View Post
So even if you put a "high flow cat" it might not matter?
my understanding is that "by law" even a high flow cat is a no-no, but whether or not its enforced is a different story. I think the Random Tech cats are considered "carb" legal so those would be acceptable. In reality thats what you're looking for on any aftermarket part is if its "carb" legal, with the numbers to justify it. Most downpipes on the market that have a high flow cat are only 1 cat therefore you're elimating one cat which is altering the system. My personal opinion, I wouldn't try getting a car tested with out at least one cat in the system.
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Old 12-26-2006, 02:44 PM   #16
dozer54321
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Quote:
Originally Posted by pudnana View Post
my understanding is that "by law" even a high flow cat is a no-no, but whether or not its enforced is a different story. I think the Random Tech cats are considered "carb" legal so those would be acceptable. In reality thats what you're looking for on any aftermarket part is if its "carb" legal, with the numbers to justify it. Most downpipes on the market that have a high flow cat are only 1 cat therefore you're elimating one cat which is altering the system. My personal opinion, I wouldn't try getting a car tested with out at least one cat in the system.
again ill let you know come january some time
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Old 12-26-2006, 09:37 PM   #17
pajak
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Quote:
Originally Posted by racingfish View Post
i know someone who went to get their wrx tested... he has no cats and passed.

hope that answers your question....

1. they dont do a visual
2. they dont do a sniff
3. your allowed 1 ready light
4. they only check if your have a cel showing
5. they will spot check a car by throwing it on the dyno (2wd)
How do they put it on a 2wd dyno? Isnt that bad?
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Old 12-26-2006, 10:23 PM   #18
Valhakar
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I just got My emissions done last week, I still have my Virginia plates. I run with 2 cats removed and a Custom Protune on an Accessport.

ODB2 port test and out the door. The only inspection I got was everyone gawking at my MRT TMIC.
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Old 12-26-2006, 10:24 PM   #19
Black-Falcon
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Quote:
Originally Posted by pajak View Post
How do they put it on a 2wd dyno? Isnt that bad?
You don't, and thats why there is no dyno test for subaru's.
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Old 12-27-2006, 04:31 AM   #20
pajak
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Quote:
Originally Posted by racingfish View Post

1. they dont do a visual
2. they dont do a sniff
3. your allowed 1 ready light
4. they only check if your have a cel showing
5. they will spot check a car by throwing it on the dyno (2wd)

When he put "they will spot check a car by throwing it on the dyno (2wd)" i knew that they dont do that, i said that so he could fix it, i think he was confused.
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Old 12-27-2006, 11:32 PM   #21
05blkoutWRX
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i work at a emissions place. let me know when you guys come in and ill hook you up. with all cars 96 and newer we just hook it up to our computers and as long as your check engine light works properly you will be fine. but thats it. we dont do a visual check for our cars. so yea basically everthing that racingfish said
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Old 12-28-2006, 12:13 AM   #22
dozer54321
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ill be letting you know fairly soon then, you are off of glendale yes?
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Old 12-28-2006, 10:06 AM   #23
racingfish
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i dont think im ever confused... and they do throw it on a 2wd dyno... i thought that you would put 1 and 1 together and relized u have bought a awd car, hence making it exempt... guess i was wrong for thinking that u'd have the brains to figure it out...
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Old 12-28-2006, 02:30 PM   #24
pajak
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Yeah makes alot of since thowing our awd cars on a 2wd dyno ill tell the emissions place to **** off unless they want to pay for what they break.
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Old 12-28-2006, 02:34 PM   #25
Valhakar
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They will NOT Dyno an AWD car on they Dyno. AWD is exempt. If you are Pre1996 they will still sniff you at 2-3 different throttle positions. If you are 96+ then you have ODB2 and they simply hook up the ECU to their check station.

Anyone with an AccessPort is fine. Anyone that is reflashign their own with OPEN ECU tools should be fine. Anyone with a UTEC is BONED. Piggybacks FTL.
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