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o2 extensions or sims?

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Old Feb 8, 2007 | 10:39 AM
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Default o2 extensions or sims?

well i'm going to be installing my Lt pacestter headers and ory pipe....well i'm not to sure if i should buy o2 extensions or sims ...does anyone know what works the best or does it even matter...and just to make sure i only need to buy to correct of w/e i decide to get ...sry stupid question...
anways thx for the help
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Old Feb 8, 2007 | 11:57 AM
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you will need two extentions for your front o2 sensors. you have to have your two front ones in the collectors. then you will need to get sims for the back o2 sensors or you will set off a "SES" light. the front two will be infront of the cats, the back to behind the cats
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Old Feb 8, 2007 | 11:04 PM
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so i have to get two o2 extensions..then 2 sims...cause i wont have any cats due to the off road y-pipe..? Also what length extensions ..is is 24"?
thanks for the help
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Old Feb 9, 2007 | 11:27 AM
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yea, i think they are 24" extensions. you don't rreeaalllllyyy need the sims, i don't run them myself. you will have a ses light come on if you don't run them. all depends on how annoying it is to you.
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Old Feb 9, 2007 | 11:38 AM
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Just get the rears shut off via a tune, the best way really. As for extentions, your not going to need more then 12", 24's are a bit much I had to do alot of zip tying for the slack.
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Old Feb 9, 2007 | 11:43 AM
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Now might be a good time to get new O2's. You want Bosch 13111's because they work better with headers than the stock ones and you won't need extensions.

If you know somebody who can tune the car you will not need sims.
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Old Feb 9, 2007 | 11:47 AM
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You need either extensions and sims. Or extensions and a tune . Also instead of the extensions you can get the bosch o2's if you wanna spend the money.

I went the extensions and get the car tuned route
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Old Feb 9, 2007 | 03:35 PM
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get the bosh 13111's my ses light still came on with extensions and my buddies is doing the same know.
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Old Feb 9, 2007 | 05:33 PM
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How much are the bosh 13111's
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Old Feb 9, 2007 | 05:35 PM
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I think I paid $120 for both of mine.
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Old Feb 9, 2007 | 06:11 PM
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Also. You will have a really hard time finding the sims. They are actually mroe expensive in most cases than just having the codes shut off by a tuner. Caspers no longer makes them due to a government ruling, and they were probably responsible for 95% of the market. You will have to find a used set.
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Old Feb 10, 2007 | 12:11 AM
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i had mine tuned out WAIT4ME deltes codes for 45ish dollars and will do a performance tune for 75 + shipping.mine works fine he is a sponsor
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Old Feb 13, 2007 | 10:30 AM
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i think i'm just going to get the extensions...and when i get money a tune or sims...but will having the ses light do anything (computer wise or mechanical)?or is it purely annoying seeing the light lol
thanks everyone
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Old Feb 13, 2007 | 12:44 PM
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IIRC, it is just the light. Doesn't affect performance or operation.

May be wrong, please feel free to correct if I am.
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Old Feb 13, 2007 | 12:53 PM
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Originally Posted by Taco
IIRC, it is just the light. Doesn't affect performance or operation.

May be wrong, please feel free to correct if I am.
I was wondering this as well since my SES light has been on for 40k miles. Anyone care to chime in, please do.
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Old Feb 13, 2007 | 12:53 PM
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I got BOTH of my bosch 13111's on ebay for a total of $55 shipped. both brand new
so you may want to check there, you never know what people are selling.
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Old Feb 13, 2007 | 01:01 PM
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It doesn't affect anything, other than getting it inspected.
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