Question.. passing an OBDII emissions test
Thread Starter
Burning Brakes
Joined: Jul 2001
Posts: 775
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From: Myrtle Beach South Carolina
Question.. passing an OBDII emissions test
Anybody here familure with the newer emissions testing (OBDII)? In this type of testing they test your car with the engine off and just use a computer to communicate with the cars computer and they do not visibly check for cats. Will a C5 with no cats and O2 simms installed pass the test ?
Team Owner
Joined: Sep 1999
Posts: 20,054
Likes: 44
From: Swansea IL
Re: Question.. passing an OBDII emissions test (XportC5)
Here in Illinois (near St Louis) I was tested last fall. They shut off the motor plug in the cable re start the car and let it idle for a minute or so, it down loaded the data it's looking for. The screen flashed PASSED and out popped a certificate. I'm good for another 3 years.
Easy and painless, no more dyno crap.
As long as there are no codes being signaled by your DIC you should pass. But some states have a visual inspection (I believe Calif does that) as well so if you don't have cats and your car is not stinking up the place you should be fine. But on the other hand if your car smells like "exhaust" you may get a visual, then youÂ’re screwed. WasnÂ’t worth the 5 extra HP for me and I didnÂ’t need to sound like Jeff Gordon.
Good luck
Tom
[Modified by AFVETTE, 5:50 PM 1/25/2004]
[Modified by AFVETTE, 5:52 PM 1/25/2004]
Easy and painless, no more dyno crap.
As long as there are no codes being signaled by your DIC you should pass. But some states have a visual inspection (I believe Calif does that) as well so if you don't have cats and your car is not stinking up the place you should be fine. But on the other hand if your car smells like "exhaust" you may get a visual, then youÂ’re screwed. WasnÂ’t worth the 5 extra HP for me and I didnÂ’t need to sound like Jeff Gordon.
Good luck
Tom
[Modified by AFVETTE, 5:50 PM 1/25/2004]
[Modified by AFVETTE, 5:52 PM 1/25/2004]
Racer
Joined: Oct 2002
Posts: 479
Likes: 0
From: Bethesda MD
Re: Question.. passing an OBDII emissions test (XportC5)
ya you should be okay. as long as you don't have any DTC codes. sometimes the ODBII test look for more than codes, but thats more likely in CA. if you fail, then time for you to contact me and I'll hook you up with my tuner.
I passed emissions in VA (dyno roller test) no cats, tailpipe sniffer.
I passed emissions in VA (dyno roller test) no cats, tailpipe sniffer.
Advanced
Joined: Sep 2003
Posts: 58
Likes: 0
From: CA
Re: Question.. passing an OBDII emissions test (cute301guy)
There's also a set of tests that the PCM runs on several emissions related systems that have to have been accomplished and passed.
If you reset your PCM right before going to the smog test, the tests will be reset, and will not have been run (they require a certain number of drive cycles), so DO NOT RESET YOUR PCM RIGHT BEFORE A SMOG TEST!!
The scan check is checking for both codes, and the completion of those tests.
If you reset your PCM right before going to the smog test, the tests will be reset, and will not have been run (they require a certain number of drive cycles), so DO NOT RESET YOUR PCM RIGHT BEFORE A SMOG TEST!!
The scan check is checking for both codes, and the completion of those tests.
Burning Brakes
Joined: Oct 2001
Posts: 834
Likes: 0
From: Grayson Ga.
Re: Question.. passing an OBDII emissions test (XportC5)
No cats and O2 simms should be just fine.
Here's a link to my adventure. http://forums.corvetteforum.com/zerothread?id=705276
Here's a link to my adventure. http://forums.corvetteforum.com/zerothread?id=705276
