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  #1  
Old 06-06-2012, 05:49 PM
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Pre cats

im thinkin about removing my pre cats but i have one question will my car still pass emissions with them remove and i was planning on using this for the o2 lights http://thefastman.com/o2simm.php
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Old 06-06-2012, 06:57 PM
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Re: Pre cats

Your computer will think it passes when they plug it in, however if they look underneath they will see no cats and fail you. I guess it depends on where you live really. Check your local emissions laws. I would just gut them to be safe
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Old 06-07-2012, 09:55 PM
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Re: Pre cats

i never thought about guttin them what would be the best way to go about that?
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Old 06-07-2012, 10:06 PM
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Re: Pre cats

Depends on the state. Air chisel and alot of time.
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Old 06-07-2012, 10:47 PM
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Re: Pre cats

so will the main cat still help me pass emissions
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Old 06-07-2012, 11:02 PM
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Quote:
Originally Posted by Tanner505 View Post
so will the main cat still help me pass emissions
No, because you will fail visual and possibly due to CEL

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Old 06-07-2012, 11:12 PM
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Re: Pre cats

so this wouldnt help with the cel then http://thefastman.com/o2simm.php
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Old 06-07-2012, 11:26 PM
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Re: Pre cats

Maybe , maybe not.....They are hit and miss.

I can turn the CEL light/O2s off in SCT but don't think I can get it to pass an OBDII PCM scan. Haven't had to try yet.
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