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Emission Help

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Old 09-04-2008 | 07:41 PM
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Question Emission Help

Ok I got the car running today and fired right up, no issues..

Well there was one but not with the car. I went to the MVD to renew my tags and I need to pass emissions..

As of right now my setup is PaceSetter LT's and a summit universal H pipe.

My question is if I put 2 cats in, one on each exit on the hpipe with a turndown at the end of that should I be in good shape? Also AIR pump is gone but I have everything but the headers arent emission hookup. And as far as EGR that was tuned out.
Old 09-04-2008 | 07:48 PM
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It depends on what state you live in. You will fail inspection no doubt if they do it. No EGR might make it tough for you to beat the sniffer.
Old 09-04-2008 | 07:51 PM
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The farther the cats are from the engine, the cooler they will run, and the less effective they will be. AIR should not be an issue with tailpipe emissions, since most dyno routines do not test from a cold start, and that's the only time the AIR pump runs. EGR may cause a problem with NOx emissions, particularly if you are running hot or running lean.
Old 09-04-2008 | 07:51 PM
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They do a physical inspection, yes. So with what I have to work with what should I do??
Old 09-04-2008 | 07:53 PM
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Hard to say, you have your odds stacked against you. Assuming you have a pair of cats that can offer some good scrubing and they do not do a visual inspection, you might be able to pass.
Old 09-04-2008 | 08:00 PM
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So I gotta swap out headers just to pass??
Old 09-04-2008 | 08:04 PM
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Originally Posted by bowtiekid
So I gotta swap out headers just to pass??
Not necessarily, people have passed both the sniffer test and the plug-in test with long tubes.
Old 09-04-2008 | 08:09 PM
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Ok. Whew..

So then should I just try it with how I explained? Or move the cats to the collector at the header?
Old 09-04-2008 | 08:32 PM
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Originally Posted by bowtiekid
Ok. Whew..

So then should I just try it with how I explained? Or move the cats to the collector at the header?
Its worth a shot. As for the cats, ideally you want them as close to the collectors as possible.
Old 09-04-2008 | 08:37 PM
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Okay. Ill try to get this done asap.

Btw if it helps any i live in AZ and they do the Physical, Snuffer, and plugin of the pcm
Old 09-04-2008 | 08:43 PM
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Originally Posted by bowtiekid
Okay. Ill try to get this done asap.

Btw if it helps any i live in AZ and they do the.... plugin of the pcm
Even on OBD-I?
Old 09-04-2008 | 08:51 PM
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Im not sure about that. I head this from my shop teacher. Hes a credible source.. and his was on OBD2 so maybe they dont. Im not throwing any codes anyways..
Old 09-05-2008 | 12:24 AM
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As far as I know smog shops don't plug in for OBD1 cars, they run inspection and the sniffer. If you can find a shop that doesn't do the inspection, or one that doesn't know what to look for, you have a chance at passing.
Old 09-05-2008 | 07:30 AM
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Originally Posted by bowtiekid
Im not sure about that. I head this from my shop teacher. Hes a credible source.. and his was on OBD2 so maybe they dont. Im not throwing any codes anyways..
Thats probably why. Generally, OBD-I has to do the sniffer, OBD-II just has to do the plug-in. In Illinois, life got easier for the OBD-I cars, they no longer have to satisfy emissions testing.
Old 09-05-2008 | 05:34 PM
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So I dont have to have a "stock exhaust"? As long as I have cats and everything is there they wont care?


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