leostunts Posted July 28, 2005 Share Posted July 28, 2005 Which one is it? I know there's 4 of them. Quote Link to comment Share on other sites More sharing options...
Bandit Posted July 29, 2005 Share Posted July 29, 2005 You are correct, there are (4) O2 sensors. (2) before the catalytic converters. (2) after the catalytic converters. (1) where the two pipes come back together before they split again into the dual exhaust. This last one is your main catalytic converter. Quote Link to comment Share on other sites More sharing options...
MitchB Posted July 30, 2005 Share Posted July 30, 2005 The last time I checked, 2+2+1 equals 5. :) Quote Link to comment Share on other sites More sharing options...
leostunts Posted July 30, 2005 Author Share Posted July 30, 2005 You are correct, there are (4) O2 sensors.(2) before the catalytic converters. (2) after the catalytic converters. (1) where the two pipes come back together before they split again into the dual exhaust. This last one is your main catalytic converter. ← Do you part # and cost? or best place to purchase? more like cheapest, I know cheap and Lexus don't go together! ;) Quote Link to comment Share on other sites More sharing options...
leostunts Posted July 30, 2005 Author Share Posted July 30, 2005 I laid out my stock exhaust on the ground. After the 2 cats to the 1 cat and the 2 resig. There were no o2 sensor holes? Last I remember seeing the 2 o2 sensors before the 2 factory cats. And that's it! Damm that's alot of two's! and yes forgot to add have on the last post. Quote Link to comment Share on other sites More sharing options...
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