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Old 01-18-2011, 12:04 PM   #1
good_snow
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Member#: 185303
Join Date: Jul 2008
Chapter/Region: RMIC
Vehicle:
98 Impreza 2.5RS
BDP

Default Before I do emissions

So I I'm due for emissions testing in CO and I wanted to know what I should do to make sure I pass. I've read that I should try some type of fuel cleaner or E85, make sure my engine is nice and warm and should I flash to a stock map? I only have one high-flow cat in my system at the top of my DP.

Here's my setup:

98 GC w/'02 WRX engine
Grimmspeed UP
CNT Catted DP to GMS Catback
AP tuned to Stage 2 running on 91oct

Thanks!
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Old 01-18-2011, 12:08 PM   #2
KIrbstermcgee
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Chapter/Region: TXIC
Location: TEXAS
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Any check engine lights? As long as there are no CEL and all your monitors are "ready" you should be ok as long as they dont use a sniffer(and if you dont have a CEL, then your monitors should be fine). I would go check out possible state shops and see if they put anything in the tail pipe. If they dont, you'll be good to go(you're obdII too, so they probably wont)
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Old 01-18-2011, 12:14 PM   #3
arghx7
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Don't they have a sniffer test in Colorado? It will be a lot easier to pass with a stock downpipe. Aftermarket performance cats are designed to be inexpensive and high flowing, not emissions-friendly.
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Old 01-18-2011, 01:11 PM   #4
KIrbstermcgee
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Quote:
Originally Posted by arghx7 View Post
Don't they have a sniffer test in Colorado? It will be a lot easier to pass with a stock downpipe. Aftermarket performance cats are designed to be inexpensive and high flowing, not emissions-friendly.
Well they do sniffer tests everywere. Im a state inspector in Texas. Not sure if its diffrent in colorado, but here in Texas a sniffer test is only manditory on OBDI cars.
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Old 01-18-2011, 01:17 PM   #5
mobomelter
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Old 01-18-2011, 01:33 PM   #6
KIrbstermcgee
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Quote:
Originally Posted by mobomelter View Post
Texas says the same thing. HOWEVER, 9/10 shops dont have a dynometer. Honestly i would scope out a shop and see how they do there testing before replaced a cat. It cant hurt. And lets say you dont see them use one, and then on your car they pull one out of there a** and fail your car. By law you have 15 days to fix your car and return back for the test, and you dont have to pay again.
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Old 01-18-2011, 01:59 PM   #7
mobomelter
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Quote:
Originally Posted by KIrbstermcgee View Post
Texas says the same thing. HOWEVER, 9/10 shops dont have a dynometer. Honestly i would scope out a shop and see how they do there testing before replaced a cat. It cant hurt. And lets say you dont see them use one, and then on your car they pull one out of there a** and fail your car. By law you have 15 days to fix your car and return back for the test, and you dont have to pay again.
Ah see in Maryland as far as I know you can't go anywhere but the government run Emissions stations. But I believe all cars from 1996 and up only get plugged in here. I'd say try once then replace it if you fail.
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Old 01-18-2011, 02:56 PM   #8
good_snow
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Join Date: Jul 2008
Chapter/Region: RMIC
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98 Impreza 2.5RS
BDP

Default

I do have a CEL but I know what it is and I can turn it off with my AP. I would like to at least try to pass with my current setup and then if I fail put all my stock stuff on. So should I flash to stock before the test or does Stg. 2 not make a difference?

Thanks for the feedback!
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Old 01-18-2011, 07:04 PM   #9
KIrbstermcgee
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Ive never used the AP, but if you're able to check monitors on it, make sure they are all "ready". If you go in after you clear the codes theres a good chance they will not be, resulting in fail. Once you clear the codes the car must be driven its drive cycles in order for your emissions monitors to pass.
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Old 01-18-2011, 10:01 PM   #10
nme187
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Since you're running stage 2 the AccessPORT will mask the CEL P0420 and it sets that to not ready; as of right now the AP does NOT force readiness unlike OpenSource BUT here within the next few weeks there will be an update for the AP that will force readiness so you'll pass w/o issues. What this means to you is depending on your county and their emission standards you MAY or MAY NOT pass depending on how many readiness checks they require. Technically the vehicle wont fail emissions, they just wont be able to run the tests till it's reading ready.

Hope that helps.
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Old 01-20-2011, 12:22 PM   #11
ZOMBIE_WRX
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Chapter/Region: RMIC
Location: Denver
Vehicle:
2003 WRX
Silver

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I just went thru testing in denver I failed 3 times. I have a 03 wrx

My mods were

Borla header
Custom uppipe
Meagan 4 ' bellmouth Down pipe
Full n1 style 3 INCH exhaust
Aem short ram c.a. I
Stage 2 cobb map

Changed the down pipe to the double catted down pipe from perrin. And failed

Then went to stock map and the perrin pipe and failed
That time I was close here is the results.

Hc GPM 1.6264 limit 1.2000 fail
Co GPM 11.6048 limt 15.0000 pass
CO2 GPM 404.5305 pass
Nox GPM 3.3335 limit 132nd.5000

So I got a factory down pipe and loaded the stock map. new plugs and cleaned the maf sensor
and got the car real hot
And rolled in and passed

So in the end I spent about a thousand bucks got a ticket for no regi and paid the max fine at dmv for being 4 months late


Hope this helps
Oh ya btw emmisions testing is bull**** screw the ozone give me horsepower till the end.
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Old 01-20-2011, 02:58 PM   #12
good_snow
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Member#: 185303
Join Date: Jul 2008
Chapter/Region: RMIC
Vehicle:
98 Impreza 2.5RS
BDP

Default

Good to know. I think I might get a new air filter and just go get it tested and hope for the best. I don't know whether I shoul get some fuel cleaner or a couple gallons of E85 as well?

Quote:
Originally Posted by ZOMBIE_WRX View Post
I just went thru testing in denver I failed 3 times. I have a 03 wrx

My mods were

Borla header
Custom uppipe
Meagan 4 ' bellmouth Down pipe
Full n1 style 3 INCH exhaust
Aem short ram c.a. I
Stage 2 cobb map

Changed the down pipe to the double catted down pipe from perrin. And failed

Then went to stock map and the perrin pipe and failed
That time I was close here is the results.

Hc GPM 1.6264 limit 1.2000 fail
Co GPM 11.6048 limt 15.0000 pass
CO2 GPM 404.5305 pass
Nox GPM 3.3335 limit 132nd.5000

So I got a factory down pipe and loaded the stock map. new plugs and cleaned the maf sensor
and got the car real hot
And rolled in and passed

So in the end I spent about a thousand bucks got a ticket for no regi and paid the max fine at dmv for being 4 months late


Hope this helps
Oh ya btw emmisions testing is bull**** screw the ozone give me horsepower till the end.
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Old 01-20-2011, 03:53 PM   #13
sspeed
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I passed Denver emissions with just a hi-flow cat, but it was clooooosseeeee.... it all depends on how they drive it... I'll do a zero wastegate map next time...

http://legacygt.com/forums/showthrea...ti-124141.html

HC 0.2617 out of 1.2000
CO 5.0430 out of 15.0000
NOx 1.2641 out of 1.5000
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Old 01-20-2011, 05:57 PM   #14
nme187
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Quote:
Originally Posted by good_snow View Post
Good to know. I think I might get a new air filter and just go get it tested and hope for the best. I don't know whether I shoul get some fuel cleaner or a couple gallons of E85 as well?
E85 does not have the same burn qualities as petrol; do not mix the gases; do one or the other and if it's E85 make sure you have the proper fuel system for it and tuning.
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Old 01-28-2011, 11:25 PM   #15
good_snow
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Join Date: Jul 2008
Chapter/Region: RMIC
Vehicle:
98 Impreza 2.5RS
BDP

Default

I was going to do emissions tomorrow and use a bottle of Techron fuel system cleaner before, but I wasn't sure if I should do it that soon before I test or if I should run it through like a week before I do the test to make sure it really cleans everything first?
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Old 02-10-2011, 03:47 PM   #16
good_snow
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Member#: 185303
Join Date: Jul 2008
Chapter/Region: RMIC
Vehicle:
98 Impreza 2.5RS
BDP

Default

So I talked to my mechanic and he said I can try to lower my boost to try and help pass emissions. He was saying something about doing it mechanically with a hose? I didn't quite follow. I have an AP and I asked him if I can lower it with that and he seemed to think I couldn't. Is that true? Should I buy a boost controller and lower it that way?

Thanks!
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Old 02-10-2011, 06:03 PM   #17
aclver1
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Join Date: May 2006
Chapter/Region: RMIC
Location: SLC utah
Vehicle:
2004 Impreza 2.5rs
70 Datsun Fairlady

Default

Quote:
Originally Posted by nme187 View Post
Since you're running stage 2 the AccessPORT will mask the CEL P0420 and it sets that to not ready; as of right now the AP does NOT force readiness unlike OpenSource BUT here within the next few weeks there will be an update for the AP that will force readiness so you'll pass w/o issues. What this means to you is depending on your county and their emission standards you MAY or MAY NOT pass depending on how many readiness checks they require. Technically the vehicle wont fail emissions, they just wont be able to run the tests till it's reading ready.

Hope that helps.
Also i wanted to add at least here in Utah you can have one area that says not ready and still pass so the po420 being masked and set to not ready shouldn't be a problem here but you will need to check your states requirements. What CEL are you getting?
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