O2 sims function
#1
O2 sims function
I'm trying to understand what O2 sims do as far as relaying fuel/air mixture back to the PCM. I'm installing a Random Tech dual cat y-pipe and headers on my 97 SS, and was wondering if replacing the stock after cat 02 sensors with 02 sims would be of any benefit. Does an 02 sim relay back to the PCM that the air/fuel mixture is at perfect nominal conditions? Would there be any negative effects of adding 02 sims?
#3
Re: O2 sims function
Originally posted by 97ss497
I'm trying to understand what O2 sims do as far as relaying fuel/air mixture back to the PCM. I'm installing a Random Tech dual cat y-pipe and headers on my 97 SS, and was wondering if replacing the stock after cat 02 sensors with 02 sims would be of any benefit. Does an 02 sim relay back to the PCM that the air/fuel mixture is at perfect nominal conditions? Would there be any negative effects of adding 02 sims?
I'm trying to understand what O2 sims do as far as relaying fuel/air mixture back to the PCM. I'm installing a Random Tech dual cat y-pipe and headers on my 97 SS, and was wondering if replacing the stock after cat 02 sensors with 02 sims would be of any benefit. Does an 02 sim relay back to the PCM that the air/fuel mixture is at perfect nominal conditions? Would there be any negative effects of adding 02 sims?
Rich Krause
#4
So their pretty much there to send a signal to the pcm if the cats are starting to plug up? The o2 sims are cheaper than getting 2 new 02 sensors; thats why I was thinking about adding them. I guess I was taking the cheaper way out
Has anyone ever had an 02 sim go bad?
If there aren't any negative effects on fuel mixture; I'll probably go with them.
Has anyone ever had an 02 sim go bad?
If there aren't any negative effects on fuel mixture; I'll probably go with them.
#5
Usually you only use sims when you're removing the cats and you don't want the computer to throw an SES light all the time. All they do is fool the computer into thinking it's getting an ok reading from the back two sensors. I don't see how it would benefit your application.
#6
Originally posted by 97ss497
So their pretty much there to send a signal to the pcm if the cats are starting to plug up? The o2 sims are cheaper than getting 2 new 02 sensors; thats why I was thinking about adding them. I guess I was taking the cheaper way out
Has anyone ever had an 02 sim go bad?
If there aren't any negative effects on fuel mixture; I'll probably go with them.
So their pretty much there to send a signal to the pcm if the cats are starting to plug up? The o2 sims are cheaper than getting 2 new 02 sensors; thats why I was thinking about adding them. I guess I was taking the cheaper way out
Has anyone ever had an 02 sim go bad?
If there aren't any negative effects on fuel mixture; I'll probably go with them.
Last edited by shoebox; 02-12-2004 at 10:41 PM.
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