therobman

iTrader: (39)

im install pacesetters with an offroad y on my 2000 trans am i have o2 extensions but i dont on plan on gettin a tune for a while some people are tellling me that i need o2 sims or i will run to lean is this true?

Albosky

iTrader: (2)

o2 sims are for the rear sensors, they have no affect on the air/fuel ratio , the front sensors take care of that , rears only measure the efficiency the cats are working at, which is why you need them when the cats are removed.

orangeapeel

iTrader: (18)

As long as you can live with the "Service Engine Soon" light you will be fine.

BLK02TA

iTrader: (11)

So the word about the ses light being on for those doesn't really effect performance? Someone was talking about cat protection or sumthing kicks in?

staringback05

iTrader: (8)

take it your talking about your rears....a "tune" isnt require to turn them off, just get some one with some software to turn them off....also sims have a tendancy to burn out after a while or short out....if anything not getting the car tune will cause it to run rich slightly....

orangeapeel

iTrader: (18)

Not just anyone can do it. You have to have a license for the car. So a shop will have to do it unless you know someone with the unlimited licenses.

PierreLS1

iTrader: (4)

yea very true