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#1
08-13-2003, 11:24 PM
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cat. converter
okay guys, i had a nasty virus and it took me two weeks to get it fixed, but im back....
my freind has a 2000 cav, and were workin on his exhaust, he wants to cut-out his cat. converters and just put a straight pipe in there... Someone told him that theres an o2 sensor in the cat and that you cant just cut it out like that..... i had a muffler shop put my muffler and high-flow cat on, so i dont know anything about it.... so, my question is, is there any reason, why he cant cut-out his cat? other than its illegal... 
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#2
08-14-2003, 02:10 AM
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The downstream 02 sensor will show a rich mixture and probably throw some codes and the PCM will most likely try and correct this by leaning out the A/F mixture and will result in burnt valves. This is the worst case scenario. There may be a kit to make the downstream (Post cat) 02 sensor send 14:1 signals to the PCM but I am not sure of where you would get the kits or workaround sorry.
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#3
08-15-2003, 11:35 PM
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well i just cut out my cat and am running strait pipes and seem to have no probs with it. but i know that rksport does sell a O2 simulator for that reason it tells you computer that its there and working so everything is normal. but ive had no noticeable probs with mine..just smells alittle more
__________________
My new Dodge 
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#4
08-20-2003, 09:13 PM
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when you first put just straight pipes in did you hear your valves tapping for the first 50 miles? i put a high flow cat and header on mine and it tapped for a while. also, does your car hesitate when you first start it and drive? mine does and i'm trying to isolate the problem
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