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Old 04-17-2010, 12:26 PM
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To give you all a heads up the reason people blow their engines, aka burn their valves up, when removing a cat is because their engine winds up running lean, or their fuel to air mixture is wrong putting in too much air. When I removed the cat I corrected this problem and the exhaust I have on the jeep creates enough back pressure to work with. So in theory, even with the high flow cat your engine may still be running lean and I would have that checked by a mechanic.
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Old 04-17-2010, 01:19 PM
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Better build an o2 simulator after removing that cat. You WILL kill your motor by changing it's downstream readings effectively leaning your motor and hurting your performance.
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Old 04-17-2010, 01:21 PM
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the 96's computer will automatically try and correct the problem? That's now, I know BMW does that but I wouldn't think my older vehicle would.
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Old 04-17-2010, 01:27 PM
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It will still throw a downstream code. now u mention it I don't remember if the jeeps downstream affected the afr's.

Check here
http://www.o2simulator.com

and here:
www.rpmoutlet.com
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Old 04-17-2010, 01:49 PM
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I know I've never heard of that except in newer vehicles and old BMWs and VWs...
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Old 04-17-2010, 05:26 PM
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Originally Posted by Jakeshain
Not putting the cat back on as Oklahoma doesn't inspect... second off, it just sounds too nice. Cats suck for back pressure as they cause negative back pressure, the pipes and muffler creates enough as it is.
I don't care what state you live in Emissions Laws are not regulated by the state only their decision to inspect or not. So as the site rules clearly state discussion on removing a Cat is against the rules. Not only that you are violating Federal Law there for you are discussing something that is illegal. Do not do it again. It is also illegal to modify or remove any part of your emissions system such as removing O2 sensors. If you are not familiar with the site rules please go read them and educate yourself.


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