02 simulators

[454ss]

want to take the cats off my 97 k3500 454 and have heard i will need to replace the rear 02s with simulators, where might i find these and are they plug and play ?

 

[bluex]

Idk

But I can tell you when you see about trying the spark pug non foulers, don't waste your money. I wound up putting electrical tape over my ses light

 

[dropped93]

Either that or you buy and extender (eBay has them, we've checked locally and noone carries them) that will move the 02 sensors directly out of the flow


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[454ss]

you mean like a spacer to move the 02 sensor out of the exhaust? what does that do compared to just zip tieing them up to the frame haha, just asking cause i dont know. i dont need to worry about anything going screwy with the ecm other than the light coming on do i ?

 

[bluex]

No you will be fine add long as your just removing the rear most O2s. All they do is check to make sure the cats are working.

The spacer or sparkplug nonfoulers just pull the sensor out of the exhaust flow to make it think a cat is still present. The increased flow without the cats is one thing that trips the light

 

[RHamill]

I pulled my engine light bulb and unplugged rear o2 sensors. The dummy o2 sensors (simulators) are no longer on the market.

 

[DRAGGIN95]

I must be one of the only people on here that has had very good luck with the rear 02 extension's, I buy them from my local muffler shop premade and they pull the 02 sensor up out of the exhaust stream about 1 inch, I have installed them on 4 or 5 96-99 vortec 350 truck's and have had no issues with them at all, not once ever had the check engine light come on from the cat's being gone. I even have on my 96 DD right now.

 

[96twodoor]

I bought some o2 simulaters awhile back and they worked great for me . I still have the link somewhere, my buddy just bought some about a month ago from em .

 

[bluex]

I bought some o2 simulaters awhile back and they worked great for me . I still have the link somewhere, my buddy just bought some about a month ago from em .

Wire in simulators?

Link please, I'd love to get rid of my ses without a tune....

 

[96twodoor]

Yes they just plug into the factory harness and you just ziptie em out of the way . I might have to get you that link tomorrow its saved on my work computer. The company is called afterthoughts auto iirc