taws6m6

iTrader: (37)

Getting ready to order some lt's and ory. I am buying the extensions for the front of course. I hear people say that the rear needs o2 sims and if not then it will throw a code? Is this really a bad thing? Or is there more to this like how my engine will perform without the sims? I plan on adding a cam and all supporting mods by the end of the month, so tuning will be in my near future. Can i install the long tubes now without the sims and drive it around for a few weeks tops? Hurt anything? If the only problem is just a check engine light that doesnt bother me. I am just wondering if not adding the sims right then will damage my engine?

taws6m6

iTrader: (37)

bump, someone know the answer?

z28berryhill

iTrader: (26)

your cars air to fuel ratio will change ...you need the sims to tell the cpu that you still have cats

m_ghonim

iTrader: (2)

it just tells your cpu if your cats are working or not. only front tell the cpu to alter a/f ratio.

taws6m6

iTrader: (37)

so which is it? will not running the sims harm the engine? i will get other mods that need a tune later in the month hopefully and get them tuned out. Can i run it without the sims for a little while?

c0ncEpT

iTrader: (4)

The rear sensors just monitor the performance of the cats. Running with out sims is no problem. If the light really bothers you just get the codes deleted with HP tuners.

BarneyMobile

iTrader: (4)

you'll be fine it wont hurt anything, your ses light will just be on until you get it tuned out.

RedRocketZ28

iTrader: (19)

My SES light has been on since last fall and I drove the quite a bit before I put it away. Runs just fine. I don't care about the light. It will be gone next month once my cam goes in anyway. Wait to tune that bitch until you get all your **** installed. Good luck man!

ThaBirdMan

iTrader: (15)

Simple answer...no damage to engine

scottHMT

iTrader: (5)

with lt's lid filter and no tune with a SES light, and only a right bank o2 sensor i dyno'd 332hp and around 335-340tq, now i got a ls6 intake mani and 28lbers still untuned. I do need a tune though.

2002BlackSS

iTrader: (4)

The only real issue with having the code is that your SES light will be on due to a flase reading, so if you actually do have a problem you wouldn't know it (by the light, that is).

radkon

iTrader: (2)

Bingo, thats the thing to worry about. Its like the boy who cried wolf story. If all of sudden you are getting misfires or something worse your light won't be able to tell you.

Aside from that O2 sims are now illegal and you'll have a tough time finding them if you don't already have them in your possession.

SnakeStomper

iTrader: (8)

First place I looked at had them w/ a disclaimer http://www.ws6project.com/user_stor/...9b9356ab0539e4

adillhoff

If the light is on and you throw another code, the light will blink for quite awhile.

taws6m6

iTrader: (37)

thanks for all the help guys, i plan on doing lt's one week and then hopefully the cam and other goodies the next. I just didnt want to damage the motor. I would save the $$$ by not buying the sims since ihave to get a tune anyway, Thanks everyone!! saved me a few $$$

socmguy

iTrader: (18)

You'll be fine. Mod away!