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Tanner505 06-06-2012 05:49 PM

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

Heelsparky0501 06-06-2012 06:57 PM

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 ;)

Tanner505 06-07-2012 09:55 PM

Re: Pre cats
i never thought about guttin them what would be the best way to go about that?

FlyinRyan 06-07-2012 10:06 PM

Re: Pre cats
Depends on the state. Air chisel and alot of time.

Tanner505 06-07-2012 10:47 PM

Re: Pre cats
so will the main cat still help me pass emissions

FlyinRyan 06-07-2012 11:02 PM


Originally Posted by Tanner505 (Post 640477)
so will the main cat still help me pass emissions

No, because you will fail visual and possibly due to CEL

Sent from my DROID BIONIC using Tapatalk 2

Tanner505 06-07-2012 11:12 PM

Re: Pre cats
so this wouldnt help with the cel then

FlyinRyan 06-07-2012 11:26 PM

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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