gut precats --> anti foulers?
#1
gut precats --> anti foulers?
Hey guys,
Just wondering what anti foulers or 02 sims to use after gutting the precats. Also, while this is happening, would you recommend gutting the main cat as well? Would this be another simple 02 sim or anti fouler as well? Thanks guys! Also, is there any write ups about how to gut the rear precat? I've read almost all the articles about it, and I have a good idea on how to do it, but any advice would be great! Thanks
Just wondering what anti foulers or 02 sims to use after gutting the precats. Also, while this is happening, would you recommend gutting the main cat as well? Would this be another simple 02 sim or anti fouler as well? Thanks guys! Also, is there any write ups about how to gut the rear precat? I've read almost all the articles about it, and I have a good idea on how to do it, but any advice would be great! Thanks
#2
I bought my 02 simulator from here
http://www.o2sim.com/
Specifically this model (dual output)
http://www.o2sim.com/universal-o2-si...put-p-184.html
http://www.o2sim.com/
Specifically this model (dual output)
http://www.o2sim.com/universal-o2-si...put-p-184.html
#3
I would go with anti-fouled, aka O2 spacers, because they are significantly easier to install and don't have to do any wiring.
You can buy O2 spacers on Amazon for $10 a piece and they fit perfect.
Don't fit your main cat, just pre-cats. Unless you know main cat to be plugged.
You can buy O2 spacers on Amazon for $10 a piece and they fit perfect.
Don't fit your main cat, just pre-cats. Unless you know main cat to be plugged.
#4
So after research on the forums I figured out I can just go to the local parts store and pick up a couple spark plug anti foulers and drill them out to make them work as 02 spacers. My only question now is you install these (2) 02 spacers on the bottom two primary 02 sensors, not the precat 02 sensors, correct?
Last edited by zachpark17; 10-15-2015 at 03:02 AM.
#5
You only drill out the bottom on the second non fouler, not the first.
They are only installed in the downstream sensor location, or after the precats.
If the cats aren't clogged, no need to gut them.
No need to touch the main cat if not a problem.
Purchase the correct thread size for the non fouler.
They are only installed in the downstream sensor location, or after the precats.
If the cats aren't clogged, no need to gut them.
No need to touch the main cat if not a problem.
Purchase the correct thread size for the non fouler.
#6
You only drill out the bottom on the second non fouler, not the first.
They are only installed in the downstream sensor location, or after the precats.
If the cats aren't clogged, no need to gut them.
No need to touch the main cat if not a problem.
Purchase the correct thread size for the non fouler.
They are only installed in the downstream sensor location, or after the precats.
If the cats aren't clogged, no need to gut them.
No need to touch the main cat if not a problem.
Purchase the correct thread size for the non fouler.
#7
I would go with anti-fouled, aka O2 spacers, because they are significantly easier to install and don't have to do any wiring.
You can buy O2 spacers on Amazon for $10 a piece and they fit perfect.
Don't fit your main cat, just pre-cats. Unless you know main cat to be plugged.
You can buy O2 spacers on Amazon for $10 a piece and they fit perfect.
Don't fit your main cat, just pre-cats. Unless you know main cat to be plugged.
in theory wouldn't it be possible to have the ECU modified or reprogrammed ?
#10
An o2 sim wires in place of the second o2 sensor and sends a reading of what a normal o2 secondary sensor would read.
In terms of price, spacers are the cheapest, followed by o2 sims, followed by having someone reprogram an ECU.
Last edited by TallTom; 10-20-2015 at 06:42 AM.
#11
So after research on the forums I figured out I can just go to the local parts store and pick up a couple spark plug anti foulers and drill them out to make them work as 02 spacers. My only question now is you install these (2) 02 spacers on the bottom two primary 02 sensors, not the precat 02 sensors, correct?
And that is the correct way to buy and make them work (only drill the top defouler).
#12
An O2 sim might give you other engine codes and you have to wire it up, and mask the wiring job if you have a state that checks visually.
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