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BR3W CITY · 12-30-2011, 04:07 PM

You need the front 02's, but you can loose the rears and have the CEL turned off in the tune. With no front 02, the computer hunt around trying to maintain a stoich balance, but have no way to know that it does. Run like crap.

I'm not 100% sure on temp sensor, but if you are going to have the ecm control the fans, I imagine you would need it.

12-30-2011, 04:07 PM	#2
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: O2 sensor questions keep or remove You need the front 02's, but you can loose the rears and have the CEL turned off in the tune. With no front 02, the computer hunt around trying to maintain a stoich balance, but have no way to know that it does. Run like crap. I'm not 100% sure on temp sensor, but if you are going to have the ecm control the fans, I imagine you would need it. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD