Whats the Reason for O2 Eliminating..?

[Psssshvalve]

my question is pretty much the title ......why remove the O2 sensor? wont you ecu act up and stuff?

 

[thekellbeast]

You're probably thinking of the O2 eliminator exhaust systems. They get rid of the bung for the second O2 sensor, the one after the cat. All this does is make sure the cat is doing it's job. If it isn't, or the sensor isn't there, it throws a CEL. It doesn't make any changes, and you can drive just fine without it.

 

[David15151]

hah.. no you are both wrong. The 02 eliminator you are thinking of that comes with some exhaust systems and replaces the stock 02 housing.. eliminating it. The bung from the housing is no longer on the new one.. the down pipe should now have a bung close to the flange that connects the Downpipe with the housing. The reason people do this is because an aftermakret piece will flow much better then a stock one or even a ported stock one. Another option on an 02 eliminator is a dump tube that dumps the wastegate gases to the atmosphere. You have probably heard this noise on some vids.. when the car goes into WOT it sounds like a fire extinguisher

here is a pic of a stock 02 housing.. next to the 02 eliminator I bought with my VRS exhaust system.

 

[Psssshvalve]

hah.. no you are both wrong. The 02 eliminator you are thinking of that comes with some exhaust systems and replaces the stock 02 housing.. eliminating it. The bung from the housing is no longer on the new one.. the down pipe should now have a bung close to the flange that connects the Downpipe with the housing. The reason people do this is because an aftermakret piece will flow much better then a stock one or even a ported stock one. Another option on an 02 eliminator is a dump tube that dumps the wastegate gases to the atmosphere. You have probably heard this noise on some vids.. when the car goes into WOT it sounds like a fire extinguisher

here is a pic of a stock 02 housing.. next to the 02 eliminator I bought with my VRS exhaust system.

thanks bro....so its worth it.?

 

[David15151]

well, its hard for me personally to tell because I changed the whole exhaust system at the same time. From the general reviews I see on the board it seems like a good upgrade to get. Plus, you can get a dump tube if you like that sort of thing... some say it helps control boost creep but it cant hurt anything. I mean you have less air going in at an angle so there will be less turbulence so thats a good thing. Its just loud but like I said some guys like that stuff. So.. I think it is worth it.

 

[dsm4life]

true dat! I took out my rear 02 and it keeps throwing a CEL ! I took it out cause i dont have a cat. I tried the foil trick no luck. I might look into them 02 simulator thingys

 

[David15151]

yeah the rear one is an emissions thing. Mine is on now because I have no cat but I still have it plugged in. The front sensor is the one that needs to be working all the time because that lets the ECU tune correctly. I plan on turning off the second 02 CEL light when I get DSMlink. DSMlink lets you choose what you want the ECU to check for when it turns on the CEL.

 

[JwUoNoG]

Could you get a non o2 eliminator exhaust, and then eventually buy a ported o2 dump?

 

[David15151]

yes