WS6.17

What is the best thing to do When installing long tube headers, eliminating o2s on ls1?

theblur98ss

iTrader: (71)

I just left them unplugged. You can have them tuned out or get o2 simms. If you just unplug them you'll always have the check engine light.

run em down

iTrader: (1)

sims or tuned out, depends on what you wanna pay

miller456

iTrader: (36)

Well hopefully you understand that you only delete the rear o2's and the fronts you will need extensions for. If you run w/o front o2's you will def see a po300(random missfire) code. I would not even worry about the sims and just have someone tune the rears out, most places do it fairly cheap.

EvilCamaroSS

iTrader: (8)

The front O2's have to stay, however if you have a computer emissions testing or you just hate the check engine light you will need o2 simms or have them tuned out. I also reccomend 99 Vette O2 sensors for the fronts they have extra long wires and work great for LT's alot fo time when u try to extend the OEM wires they fail. Best of luck!

run em down

iTrader: (1)

i dont have any front O2's, i also had the back ones tuned out and some work done to the computer. the front ones kept shorting out so i just unplugged them. its been over a year and a half and no problems with not having them yet...

Super Speed

iTrader: (8)

You might want to get that checked then

miller456

iTrader: (36)

w/o o2s the PCM dumps fuel and runs constantly rich to aviod detonation. It might contaminate your oil w/ excess fuel but other than that it would be fine.

theblur98ss

iTrader: (71)

What kind of mpg are you getting w/no front O2's? I ran with one unplugged by accident and the car ran like crap.

chuckyt1

iTrader: (33)

I think you need to go to open loop tuning if want to delete the fronts.

WS6.17

Thanks every 1

Bill Bowling

iTrader: (6)

I have been without O's except for my WB for a couple of years. I am running Open Loop Speed Density.

Bill

run em down

iTrader: (1)

car runs fine, mpg is good. idk ive never checked it, but its definitley as good as everyone elses

johnLs1camaro

iTrader: (28)

did you have it tuned any, if not i cant believe its not messing up.

run em down

iTrader: (1)

well i had it dyno tuned with ls1edit and the tuner went in and did some small stuff to the computer. he changed the speed limiter, hardened the tranny line pressure for firmer shifts, delayed the shift points, took out the rear o2's, turned off the egr and air so i could unplug those, and a few other small things. im pretty sure he didnt mess with anything having to do with the fronts.

i just hooked my car up to a mastertech and a modis last week and there was nothing, no stored dtc's, no misfires, no nothing. im not saying go ahead and unplug them cause someone could run into problems. i mean im really surprised that nothing has happened w/o the front O2's in. i guess only time will tell.

johnLs1camaro

iTrader: (28)

yeah well thats cool nothing has happend,mine went bad and the car went completely crazy, so thats why i was wondering..but hell if it hasnt fucked it up yet, i guess theres no reason to put them back in then.