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post #1 of (permalink) Old 02-24-2003, 10:56 PM Thread Starter
 
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Passing Emissions w/Nutter Bypass

Is it a possibility? The visual inspection in Illinois isn't incredibly hardcore - I think I can get away with that - but do any of you guys have an experiences with this? I've wanted to do the bypass for a good long while, and I'm just now getting around to it - but I don't want to fail the sniffer portion of the test... Right now my YJ idles a bit rough, but my emissions are fine.. (i just had it on a 5-gas analyzer @ school the other day...)

So what's the verdict? How about an aftermarket carb? Emissions legal?


Thanks,
Pablo
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post #2 of (permalink) Old 02-25-2003, 10:39 AM Thread Starter
 
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Re: Passing Emissions w/Nutter Bypass

guys i know someone can help me! a bunch of you guys have nuttered 258's.. [img]images/graemlins/smile.gif[/img] Anyone?
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post #3 of (permalink) Old 02-25-2003, 10:48 AM
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Re: Passing Emissions w/Nutter Bypass

I'm worried about that too. I've put on a Weber 32/26 and have everything all set up to Nutter the ignition. I know that the Weber might go against me the most though.
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post #4 of (permalink) Old 02-25-2003, 12:49 PM
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Re: Passing Emissions w/Nutter Bypass

In Colorado if the aftermarket carb has a C.A.R.B. exemption then, you could get away with it. If not you might have to find a carb from that year and hook it back up. That is what one of my friends does every year.

<font color="red"> Don't try this at home folks </font color>
With the legal stuff out of the way:

He has the carb with the stepper motor wires go into a phony loom that the inspector thinks is hooked up. Twenty minutes later the Weber goes back on. I can't say to try it but, I've seen it work. L8r,


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post #5 of (permalink) Old 02-25-2003, 01:26 PM
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Re: Passing Emissions w/Nutter Bypass

1. Remember one thing...
2. The Nutter Bypass will cause the engine
3. To run Richer...
4. It's going to be tough to lean the engine
5. Out enough to possibly pass the tailpipe sniffer,
6. Even if you get by the visual tests.
7. So, just a few words of warning...
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post #6 of (permalink) Old 02-25-2003, 01:32 PM
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Re: Passing Emissions w/Nutter Bypass

</font><blockquote><font class="small">In reply to:</font><hr />

Right now my YJ idles a bit rough, but my emissions are fine.. (i just had it on a 5-gas analyzer @ school the other day...)


[/ QUOTE ]

If you are sure your tailpipe emissions are fine then what are you worried about? As long as everything 'looks' similar to original whats the problem?
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post #7 of (permalink) Old 02-25-2003, 01:41 PM Thread Starter
 
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Re: Passing Emissions w/Nutter Bypass

Mark-

Maybe you were a little confused upon reading the post - i haven't done the nutter bypass yet. The YJ passes emissions w/flying colors w/the stock, computer controlled carb, hooked up to the ECM, etc. I'm worried about it failing miserably without it. In John Nutters writeup, he claims his emissions actually IMPROVED after he did it. I'm going to do the bypass @ school tonight and throw it on the 5-gas again to see what my readings are. I'll let you guys know how it goes later.
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