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rear o2 needed?

m17davis

m17davis

New member
Im not 100% sure about this one...... im relocating my fusebox and pcm and I was wondering if I have to wire in the rear o2 sensor? I deleted the cat and had those codes taken out so there is no engine light. Thanks for any input
 


Running without on my 04 too. all it does is make it a bit richer for a few seconds then it all gets normal. Tuned by Will, tho.
 
After driving it for a little I got a P0134. Is this cause I didnt connect the rear o2 wires to pcm and fusebox
 


Oh yeah. I forgot it said that. Lol it runs perfect tho. could I have the wrong o2? I replaced it with one from.the junkyard that doesnt have the ground on the outside of it
 
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