99LS6SS

iTrader: (4)

I put headers on my car a couple months ago and put O2 sims in place of my rear O2s i was wondering if i need to keep them on for my car to run properly or just so my computer won't throw codes

99bowtieZ

I'm pretty sure that the code for the REAR 02's will not affect performance, I could be wrong though.

99LS6SS

iTrader: (4)

Ya that's what I was thinking too. I turned off the SES code for the rear O2's to never come but I didn't think that the rear O2's did anything except read the temp or somethin like that of the rear O2's

nemss1

code for rear o2's do NOT affect performance

99LS6SS

iTrader: (4)

So even if I didn't have anything in place of rear o2's it would still run the same just would throw a code?

99bowtieZ

Yea, that was my understanding of it...

99LS6SS

iTrader: (4)

Ya same here. Cuz I have the sims on my car sold I just haven't takin them off to ship them yet (sold them two days ago and go to work when it's dark and get home when it's dark, working outta state). I got to thinking after I had them sold to someone who already gave me if I actually needed them or not

nemss1

yes, it will still run the same. i dont have cats and just removed my rear o2's and installed an oil drain plug in the bungs (18mm x 1.5 pitch). i bought the oil drain plugs frm advance auto. oil drain plugs are for a toyota

all rear o2's do is detect a malfunctioning cat. front o2's will affect performance, rears dont affect performance

99LS6SS

iTrader: (4)

Alright thanks alot for clearin it up man.

nemss1

no prob bro, glad to help

Kingc8r

iTrader: (21)

I had my rear 02s deleted and had them tuned out

99LS6SS

iTrader: (4)

By tuned out you mean they went in and turned the code to never trip an SES light? Cuz if so I've already done this

Kingc8r

iTrader: (21)

Yea....so you should be fine.....