O2 Sims for a '98??

cayman

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O2 Sims for a \'98??

OK. Did a search and saw conflicting info. I want to do a cat delete on a stock '98 RT. Do I need the O2 sims to keep from throwing codes? Thanks in advance!
 

Knight Viper

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Re: O2 Sims for a \'98??

I have a brand new pair (never installed, put on high flow cats) plug in type from Casper electronics paid $130.00 will sell for $100 shipped
 

zen garage

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Re: O2 Sims for a \'98??

Yes you will need them. I threw a CEL a few time a week when I pulled the cats on my 98. There are conflicting reports but for $100 bucks what do you have to lose.
 

Silver Snake

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Re: O2 Sims for a \'98??

what do you have to lose.

A HUNDRED BUCKS! Geez! Just pull the cats and find out. If you get a Check Engine Light THEN buy the sims. Chances are you might not need them. In that case send me the hundred bucks.

Good luck!
 

v10kingsnake

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Re: O2 Sims for a \'98??

look, i didnt think a 98 neded the sims, but i have a 97 gts and no cats for over 2 years and no light ever! though the 97 and 98 was the same but maybe i am wrong. i can tell you that a 97 will not throw the light tho, this i do have experience with.
 

Hoosier Daddy

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Re: O2 Sims for a \'98??

look, i didnt think a 98 neded the sims, but i have a 97 gts and no cats for over 2 years and no light ever! though the 97 and 98 was the same but maybe i am wrong. i can tell you that a 97 will not throw the light tho, this i do have experience with.
1997 and earlier does not have O2 sensors downstream of the cats. So when those cats are removed there is no downstream measurement to compensate for. 1998 and newer have downstream O2 sensors and will cause the check engine light to illuminate when the cats are gone or even bad!!!
 
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cayman

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Re: O2 Sims for a \'98??

I might be interested. Excuse the ignorance but do you need to take the OEM sensors out and plug the holes or can you leave them in?

Yes you will need them. I threw a CEL a few time a week when I pulled the cats on my 98. There are conflicting reports but for $100 bucks what do you have to lose.
 

Knight Viper

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Re: O2 Sims for a \'98??

You can leave them in to seal the hole but it would be a cleaner job to just install a simple plug (local muffler shop) or some even use a cut off spark plug, it will keep your sensors good incase you want to reinstall later. But it is as easy as unplugging your 02 sensors and plugging in the sims, wire tie in place and you’re done. :2tu:
 
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cayman

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Re: O2 Sims for a \'98??

Thanks for the info. If I had asked this question on another site (I won't alley mention the site) They would have been all over me like flies on s$!t :bonker: . Pretty viscious over there. I can handle it, but when it comes time to get useful information, its sites like Viperclub that shines! :2tu:

You can leave them in to seal the hole but it would be a cleaner job to just install a simple plug (local muffler shop) or some even use a cut off spark plug, it will keep your sensors good incase you want to reinstall later. But it is as easy as unplugging your 02 sensors and plugging in the sims, wire tie in place and you’re done. :2tu:
 

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