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Old 08-04-2013, 09:17 PM   #1
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Illinois guys...Pass emissions with O/R X?

I have been reading around all sorts of forums trying to get a true answer, but I am not having too much luck. In Illinois all we have is OBD2 emissions testing. No visual or sniffer.

How can I pass emissions with an off road x pipe?

I have heard that turning off your rear o2 sensors will help you pass....Is this true?

I do have a SCT Bama tuner. Will my Bama tuner be of any help?

Thanks all.
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Old 08-04-2013, 10:40 PM   #2
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Actually must be just if you live in Chicago area. No emissions down here..
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Old 08-04-2013, 10:43 PM   #3
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yup

Yes, use your tuner. Or just have bama, if you have free tunes for life, make a tune for the or x pipe and they will have it set up. In PA we have the same plug in test and mine passes the obd II test with a tune shutting off the rear o2s....
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Old 08-04-2013, 10:45 PM   #4
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Yep. It is only a few counties near the city. I'm about 30 minutes west of Chicago and we get OBD2 tested every 2 years. Most of the forums I've been going through say just take out a few bucks and pay the emissions guy to pass you.

Anyone got any good friends that work at an inspection facility in Illinois? I would love to know where so I can get that PASS sticker Ha.

---------- Post added at 10:45 PM ---------- Previous post was at 10:44 PM ----------

Quote:
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Yes, use your tuner. Or just have bama, if you have free tunes for life, make a tune for the or x pipe and they will have it set up. In PA we have the same plug in test and mine passes the obd II test with a tune shutting off the rear o2s....
@Doctor....Doesn't it throw a code that your "sensors are not ready"??.......
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Old 08-04-2013, 11:04 PM   #5
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?

Hum....... I never hooked up my emissions tool to check to see if they said ready, not ready, or not light up at all like they didn't exist........
My 07 gt just passed in PA, Pittsburgh, Allegheny county and we have tough emissions here with all the green crap.
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Old 08-04-2013, 11:15 PM   #6
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Hum....... I never hooked up my emissions tool to check to see if they said ready, not ready, or not light up at all like they didn't exist........
My 07 gt just passed in PA, Pittsburgh, Allegheny county and we have tough emissions here with all the green crap.
What is your exact setup? Catless x pipe? What tune were you running?
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Old 08-05-2013, 12:02 AM   #7
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My emissions is coming up too. I'm in chicago and would love to hear this. Before i bought the car it passed, and i've got catless Xpipe.
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Old 08-05-2013, 12:16 AM   #8
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If the rear o2s are off it will show as not ready when they plug your car in. If your tuner turns them on you'll throw a code.
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Old 08-05-2013, 01:59 AM   #9
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What about with MIL eliminators?
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Old 08-05-2013, 07:54 AM   #10
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....

I tried mil eliminators back in the day on my 07, 100 miles and the light was back on...
I have jba equal length shorty headers, pypes OR xpipe, and the pypes pype bomb super system..... I had zero problems in PA and we use the OBD II port with readiness codes, and only one is not aloud to be set to pass.
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Old 08-05-2013, 10:07 AM   #11
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Quote:
Originally Posted by dr.gsxr1000nos View Post
I tried mil eliminators back in the day on my 07, 100 miles and the light was back on...
I have jba equal length shorty headers, pypes OR xpipe, and the pypes pype bomb super system..... I had zero problems in PA and we use the OBD II port with readiness codes, and only one is not aloud to be set to pass.
So, what you're saying is that you had your rear O2s turned off, but, you passed because you only had ONE code that read "not ready" and having one code still allows you to pass? By the way, nice job passing with no cats. I hear a lot of people having trouble passing
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Old 08-05-2013, 10:37 AM   #12
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I have made a few friends over the years, so a visual test is nothing, its the computer that cares.....
I really never checked to see if mine passed because it was my only readiness code not set.... it may be the reason, but I believe your emissions computer only communicates problems and something not being ready from the pcm . I will check my car when I get back from vacation and see what my rear o2 sensors read.... this is a good question.
If it turns out to be the only one not set, then I would recommend getting your emissions test done in the hot summer, because your evap is hard to keep set when it is cold. It goes back and forth .so with a full tank of gas and hot temps, evap sets quickly. At least it does on the ford 4.6/5.4 trucks and vans.
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Old 08-05-2013, 09:49 PM   #13
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Would something like this pass emissions with an O/R X pipe??

02 Sensor Raiser Non Fouler Mustang 05+
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Old 08-05-2013, 11:45 PM   #14
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You could try them. When I asked Brenspeed about them they said they dont always work.
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Old 08-06-2013, 12:48 AM   #15
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I've done so much research tonight and it looks like the best bet is too buy some spark plug non foulers and modify them a little. They are used as spacers on the o2 bungs. So, with the spacers on the o2, it sits outside of the exhaust pipe and basically reads "cleaner" air. I think I'm going to buy the O/R x pipe and somehow make some spacers.
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Old 08-06-2013, 06:25 AM   #16
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I think Autozone sells these in their help section, but I believe they are spark plug non fowlers.... or something like that. I had seen a forum somewhere with a part number.
There is another forum on top right now that guys were talking about these failing the visual part of their emissions test....
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Old 08-06-2013, 08:09 AM   #17
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IL doesn't have a visual inspection
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Old 08-06-2013, 08:23 AM   #18
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The front 02's are what the monitors read, your rear o2's are just secondary to make sure the front ones are working, so you can put mil eliminators, use your spacers, or have them shut off in the tune, as long as your not throwing a code your golden!
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Old 08-06-2013, 10:13 AM   #19
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Quote:
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The front 02's are what the monitors read, your rear o2's are just secondary to make sure the front ones are working, so you can put mil eliminators, use your spacers, or have them shut off in the tune, as long as your not throwing a code your golden!
So this is what I'm thinking.....Stock manifolds---> Off road x pipe with 2 o2 sensor spacers on each sensor---->axleback----> bama tune with rear o2 sensors on so they are "ready". When they start the car, hopefully the spacers will keep the o2 sensors out of the exhaust gases far enough to "read clean".
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Old 08-06-2013, 10:42 AM   #20
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So this is what I'm thinking.....Stock manifolds---> Off road x pipe with 2 o2 sensor spacers on each sensor---->axleback----> bama tune with rear o2 sensors on so they are "ready". When they start the car, hopefully the spacers will keep the o2 sensors out of the exhaust gases far enough to "read clean".
One pair of spacers should be good , I have full exhaust on my car LT's off road h, and flower aster axel back , my car is sc'd also and I have my rear o2's turned off in my tune , I've passed emissions 3 times already
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Old 08-06-2013, 12:36 PM   #21
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One pair of spacers should be good , I have full exhaust on my car LT's off road h, and flower aster axel back , my car is sc'd also and I have my rear o2's turned off in my tune , I've passed emissions 3 times already
Different car and computer, in IL you WON'T PASS with your rear O2s off on 05+ mustangs
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Old 08-06-2013, 12:55 PM   #22
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Different car and computer, in IL you WON'T PASS with your rear O2s off on 05+ mustangs
Thanks for clearing that up for me! I didn't know that .
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Old 08-06-2013, 01:45 PM   #23
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Thanks for clearing that up for me! I didn't know that .
I've heard it's possible but you need a dyno tuner to do it, not a mail order tune
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Old 08-07-2013, 03:51 PM   #24
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So you think a 99-04 mustang will pass if it has the rear o2's turned off? I should be gettin' a letter in the mail i'm due pretty soon. I was told the car had MIL eliminators(not 100% sure on this), and i have a Bama tune with the o2's turned off. I'm in Cook County aka "Crook" county. So i'm slightly worried about passing.
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Old 08-07-2013, 08:18 PM   #25
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Honestly, I dont know much about the MIL eliminators. I have heard many people they haven't had much luck with them. As for your rear sensors being off, that will cause you to fail the OBD2 for having "not ready" sensors.
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Old 08-07-2013, 10:41 PM   #26
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Interesting. I think the kid that sold me the car didn't let on it would be this much of a hassle. I know he passed it in July of last year, and i bought it in January. I need to ask him how he did it, or who he paid.
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Old 08-07-2013, 10:55 PM   #27
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As for the Bama tune, any tune but the race tune will pass emissions (From what I have been told). You will also only pass emissions if your rear o2 sensors are on. Im in the process of going through this off road x pipe and o2 spacers. I will keep you posted on how it goes.
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Old 08-07-2013, 11:10 PM   #28
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I just kept my stock cats and h pipe. Once every 2 years I change the tune and throw it on for emission testing.
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Old 08-07-2013, 11:25 PM   #29
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s281.....random question...Any idea how many o2 sensors sit on a 05-09gt stock h pipe? It is 2 o2 sensors right? 1 for each cat?
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Old 08-07-2013, 11:33 PM   #30
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1 in the exhaust manifold & 1 in the cat drivers side. 1just above the cat in the pipe & 1 in the cat passenger side.
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Old 08-07-2013, 11:40 PM   #31
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[QUOTE=S281;1752024]1 in the exhaust manifold & 1 in the cat drivers side. 1just above the cat in the pipe & 1 in the cat passenger side.[

Alright....Well, I'm planning on doing this non fouler trick... (just a spacer for the o2 sensor to sit outside the exhaust stream, so I can pass emissions with my o2 sensors on, aka; "ready") I am planning on double stacking the spacers on each o2 sensor just to be safe. So I will need 2 spacers for every 1 o2 sensor. So, really there is a total of 3 o2 sensors I need to double space? Sorry if that sounded confusing
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Old 08-07-2013, 11:45 PM   #32
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I dont know if you'll get a spacer on the upper passenger side sensor. There isnt much room up there to move the sensor out. It might hit the transmission.
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Old 08-07-2013, 11:50 PM   #33
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I dont know if you'll get a spacer on the upper passenger side sensor. There isnt much room up there to move the sensor out. It might hit the transmission.
Hmmm, interesting. I'm hoping I can pass emissions with just the cat o2s with the spacers. That o2 above the transmission shouldn't give me a "dirty" pollution like read on the OBD2 I hope ;/
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Old 03-20-2015, 12:15 PM   #34
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So.....What happened?!?!?!....Did the spacers work?
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Old 03-31-2016, 10:07 AM   #35
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I am interested in hearing what happened as well. I live in IL also. I am in the process of going to LT pypes and O/R X pypes. I spoke with AM rep and he said they can send me a tune for my tuner that would get me to pass emissions. From reading the above it sounds like he's not correct. Just looking for information before pulling the trigger on the parts. Thanks
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