Passed smog w/out 3rd cat

forcefed · 07-18-2003, 05:49 PM

This is just an FYI, and I wondered if anyone else has any similar experiences. We just bought our 02 WRX last weekend. The previous owner has done a lot of tasteful modifications to it. Mostly APS products. One of which was an exhaust system. However, the 3rd cat is missing and I was concerned about it passing smog. I figured if I needed, I could just buy a hi flow cat to get it to pass emissions. Well, I'm happy to report that I had it checked on Tuesday. Not only did it pass, but it passed with flying colors. HC (hydro carbons) were a mere 6.6 parts per million and CO (carbon monoxide) levels were .15%. I wonder if it would pass without the up-pipe or downpipe. Any thoughts on this would be appreciated. Oh yeah, I forgot to mention. This is for Ohio E-check. Thanks

Travis

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rexxer · 07-18-2003, 06:27 PM

The uppipe cat is mainly for cold start emissions, so as long as your engine was warmed up, you could probably get by without that as well... then again, the only exhaust law where I live is you can't increase the size of the tip on your muffler!!!

VSG · 07-18-2003, 07:59 PM

With all the cats removed I doubt it would pass emissions (at least in MA and CA).

Snowphun · 07-18-2003, 08:37 PM

Agreed, and keeping one cat (high flow even) makes a big difference in your emissions and is hardly a performance issue.

Paul

Weemus · 07-19-2003, 04:09 PM

i live in cincy and have had my scooby pass e-check with no uppipe or downpipe cat, just the midpipe cat.

offset · 07-20-2003, 11:03 PM

I live near Dayton, and for whatever reason it seems like certain stations would pass anything. I just cringe at the thought of one of those kids getting to rev my STi in a couple of years for the test.

Hopefully we can get rid of the useless E-check in Ohio. And if anyone complains about the environment; I am all for less pollution, but like I said the E-check never picks up any problems for a lot of folks.

offset

Neek · 07-20-2003, 11:09 PM

Quote:

Originally posted by forcefed
The previous owner has done a lot of tasteful modifications to it. Mostly APS products.

Isn't that pretty much a paradox?

jedimaster71472 · 07-21-2003, 09:54 AM

I have an APS muffler and it's great :dunno:
I have only the 3rd cat- wonder if would pass in NY?

Weemus · 07-22-2003, 09:17 AM

the only way to find out if it will pass it have it checked.

wrxlvr · 07-22-2003, 06:01 PM

We have a check on this one exit ramp here and my car was reading "ok, costing you money" with only my 3rd cat, but after my Cobb reflash it reads "good, saving you money".

07-18-2003, 05:49 PM	#1
forcefed Scooby Newbie Member#: 38804 Join Date: Jun 2003 Chapter/Region: SWIC Location: Arizona Vehicle: 08 WRB/Gold STI 05 LGT Wagon (SOLD) :(	Passed smog w/out 3rd cat This is just an FYI, and I wondered if anyone else has any similar experiences. We just bought our 02 WRX last weekend. The previous owner has done a lot of tasteful modifications to it. Mostly APS products. One of which was an exhaust system. However, the 3rd cat is missing and I was concerned about it passing smog. I figured if I needed, I could just buy a hi flow cat to get it to pass emissions. Well, I'm happy to report that I had it checked on Tuesday. Not only did it pass, but it passed with flying colors. HC (hydro carbons) were a mere 6.6 parts per million and CO (carbon monoxide) levels were .15%. I wonder if it would pass without the up-pipe or downpipe. Any thoughts on this would be appreciated. Oh yeah, I forgot to mention. This is for Ohio E-check. Thanks Travis * Registered users of the site do not see these ads.

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07-18-2003, 06:27 PM	#2
rexxer Scooby Specialist Member#: 27624 Join Date: Oct 2002 Chapter/Region: W. Canada Location: "Somewhere cheap... Red Deer" Vehicle: 2005 WRX STi World Rally Blue Pearl	The uppipe cat is mainly for cold start emissions, so as long as your engine was warmed up, you could probably get by without that as well... then again, the only exhaust law where I live is you can't increase the size of the tip on your muffler!!!

07-18-2003, 07:59 PM	#3
VSG Scooby Specialist Member#: 19435 Join Date: May 2002 Chapter/Region: NESIC	With all the cats removed I doubt it would pass emissions (at least in MA and CA).

07-18-2003, 08:37 PM	#4
Snowphun NASIOC Supporter Member#: 1800 Join Date: Jul 2000 Chapter/Region: NESIC Location: Way South Shore MA Vehicle: WRX /Cooper S/Miata awd/fwd/rwd	Agreed, and keeping one cat (high flow even) makes a big difference in your emissions and is hardly a performance issue. Paul

07-19-2003, 04:09 PM	#5
Weemus Scooby Specialist Member#: 16415 Join Date: Mar 2002 Chapter/Region: BAIC Location: East Bay in the CA Vehicle: 02 WRX WRBwhatothercoloristhere?	i live in cincy and have had my scooby pass e-check with no uppipe or downpipe cat, just the midpipe cat.

07-20-2003, 11:03 PM	#6
offset Scooby Guru Member#: 32636 Join Date: Feb 2003 Chapter/Region: MWSOC Location: Dayton, OH Vehicle: 2004 Impreza STi Silver/Silver	I live near Dayton, and for whatever reason it seems like certain stations would pass anything. I just cringe at the thought of one of those kids getting to rev my STi in a couple of years for the test. Hopefully we can get rid of the useless E-check in Ohio. And if anyone complains about the environment; I am all for less pollution, but like I said the E-check never picks up any problems for a lot of folks. offset

07-21-2003, 09:54 AM	#8
jedimaster71472 * Banned * Member#: 20189 Join Date: Jun 2002 Location: New York Vehicle: 2002 WRX Sport Wagon Black	I have an APS muffler and it's great :dunno: I have only the 3rd cat- wonder if would pass in NY?

07-22-2003, 09:17 AM	#9
Weemus Scooby Specialist Member#: 16415 Join Date: Mar 2002 Chapter/Region: BAIC Location: East Bay in the CA Vehicle: 02 WRX WRBwhatothercoloristhere?	the only way to find out if it will pass it have it checked.

07-22-2003, 06:01 PM	#10
wrxlvr Scooby Specialist Member#: 10788 Join Date: Oct 2001 Chapter/Region: RMIC Location: Aurora, CO Vehicle: 2002 Outback Blackety black	We have a check on this one exit ramp here and my car was reading "ok, costing you money" with only my 3rd cat, but after my Cobb reflash it reads "good, saving you money".