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Old 03-08-2007, 06:55 PM   #1
gpd323
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Default OBD2 emissions and the Bugeyed WRX w/minor mods. GTG!

Hoo boy, its been a long time since I have posted. Lurked here and there.

Not sure if this is the right place to inform you of this but, here goes.

I have a 2002 WRX I bought in March 2001. I have a few upgrades to it, but the one that concerned me the most was the Helix DP and COBB catback exhaust. You see, I have no cats (still have uppipe cat though) and I used the MIL resistor fix to cure the MIL on the dash. I have an AutoXray Code Scout 1500 that has always told me the catalyst was "not ready". Thats because there are no cats downstream of the turbo.

Anyway, my time was up and I took it to emissions testing today. It passed no problem. Seems you can have one "Not ready" status indicator and you can still pass in Washington State.

You cannot BTW, have a failure status or MIL stored that will surely show and
you will fail.

I'm relieved! Cheers everyone. Long time no post.

Greg D.
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Old 03-08-2007, 07:30 PM   #2
REX8
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The MIL ("electric fix") for the rear o2 sensor is useless.

You need to do the "mechanical fix", costs about $3. Then drive on it for a hundred or so miles until the readiness test is complete.

Throw out/sell the MIL fix.

Anyway, you can pass 100% without having any cats...you jsut need the rear mechanical fix. The MIL simply turns off the CEL. The mechanical fix, even on a catless car, will hold the 02 sensor out of the exhaust stream and "fool" the car into thinking all is well. No CEL, readiness tests will be complete, etc. etc.
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Old 03-08-2007, 08:00 PM   #3
gpd323
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yes, I know about the mechcanical fix. I was pondering that for a while. I figued I would see what happened with the MIL fix 1st, then move onto the mech one next.

I may just do that anyway. Thanks for you help and info.

Cheers, Greg D
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Old 03-08-2007, 08:02 PM   #4
REX8
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Quote:
Originally Posted by gpd323 View Post
yes, I know about the mechcanical fix. I was pondering that for a while. I figued I would see what happened with the MIL fix 1st, then move onto the mech one next.

I may just do that anyway. Thanks for you help and info.

Cheers, Greg D
So then you weren't suprised when you got the readiness code then I assume...

Glad you passed though! I wish we got that freebee around here...
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Old 03-08-2007, 08:11 PM   #5
gpd323
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Originally Posted by REX8 View Post
So then you weren't suprised when you got the readiness code then I assume...

Glad you passed though! I wish we got that freebee around here...
No not at all. I have a AutoXray Code Scout 1500 OBD2 reader that has always told me the catalyst systen was in "not ready" status. No cats after the DP of course.

No actual MIL's in the ECU to read.

Maybe I'll do the mechanical fix and see what happens? No real reason now to do that.

Cheer, Greg Downing
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Old 03-08-2007, 08:36 PM   #6
gpd323
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I know people I am old school, have owned my WRX for 6 years now. No EM, just the resistor fix. Nothing like EM and all the cool fixes out there now.

My WRX, Helix DP and COBB catback.

Just throwing it out there for some who may be cavemen like me when it comes to emissions fixes and bypasses.

Cheers, and beer me!

GPD
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Old 03-12-2007, 05:29 PM   #7
jcl
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So what about a cobb AP tuned car?

I have no trouble codes. Have the resistor fix for the uppipe and mechanical downpipe fix.

Cobb AP shows no trouble codes. Tuned stage 4 16G catless setup with blitz exhaust.

Will this show sensors as not ready?
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Old 03-12-2007, 07:21 PM   #8
gpd323
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So what about a cobb AP tuned car?

I have no trouble codes. Have the resistor fix for the uppipe and mechanical downpipe fix.

Cobb AP shows no trouble codes. Tuned stage 4 16G catless setup with blitz exhaust.

Will this show sensors as not ready?
Get it tested and find out!

You can test anytime, just not when you have too.

Greg
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Old 03-12-2007, 07:35 PM   #9
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Quote:
Originally Posted by REX8 View Post

You need to do the "mechanical fix", costs about $3. Then drive on it for a hundred or so miles until the readiness test is complete.
Anyway, you can pass 100% without having any cats...you jsut need the rear mechanical fix. The MIL simply turns off the CEL. The mechanical fix, even on a catless car, will hold the 02 sensor out of the exhaust stream and "fool" the car into thinking all is well. No CEL, readiness tests will be complete, etc. etc.
I have emissions test in a few months. I have catless invidia dp and borla hush exahust. I have done the mechanical fix, and no check engine light so far. From reading this, I DON'T have to go back to stock catalytic converter when its due for emissions??
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Old 03-13-2007, 01:24 PM   #10
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Quote:
Originally Posted by rexman2002 View Post
I have emissions test in a few months. I have catless invidia dp and borla hush exahust. I have done the mechanical fix, and no check engine light so far. From reading this, I DON'T have to go back to stock catalytic converter when its due for emissions??
maybe, maybe not- depends on your state testing laws and the shop you take it to
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Old 03-13-2007, 02:22 PM   #11
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Federal law allows 1 or 2 "not ready" codes, depending on model year. I think a 2002 would be allowed to have 2 items that read "not ready".
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Old 03-13-2007, 05:13 PM   #12
jcl
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Quote:
Originally Posted by gpd323 View Post
Get it tested and find out!

You can test anytime, just not when you have too.

Greg
Hah, I actually got my notice for emissions testing.

I HAVE to at this point ><.
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Old 03-13-2007, 05:31 PM   #13
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Quote:
Originally Posted by rexman2002 View Post
I have emissions test in a few months. I have catless invidia dp and borla hush exahust. I have done the mechanical fix, and no check engine light so far. From reading this, I DON'T have to go back to stock catalytic converter when its due for emissions??
Does your state test emissions out the tailpipe? If they just plug in OBDII then you should be fine.
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Old 03-13-2007, 06:03 PM   #14
Jon [in CT]
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People, there's no need to guess about what is tested and whether you'll pass.

To see what's tested, read the document at http://www.etools.org/i4a/pages/index.cfm?pageid=2262.

To see how many of your emissions monitors are in the NOT READY state, just hook up a decent OBD-II scan tool or go to Autozone.
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Old 03-14-2007, 04:19 PM   #15
rexman2002
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Quote:
Originally Posted by InvertedB View Post
Does your state test emissions out the tailpipe? If they just plug in OBDII then you should be fine.


OBDII
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Old 03-14-2007, 09:45 PM   #16
DougG
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Quote:
Originally Posted by Jon [in CT] View Post
People, there's no need to guess about what is tested and whether you'll pass.

To see what's tested, read the document at http://www.etools.org/i4a/pages/index.cfm?pageid=2262.

To see how many of your emissions monitors are in the NOT READY state, just hook up a decent OBD-II scan tool or go to Autozone.
Great reference! Looks like the original poster lives in Washington and has no visual inspection. Connecticut as well as most other states DO have a visual inspection and therefore would detect the absence of a cat, unless you could convince them that the uppipe cat was sufficient.
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