o2 sensor spacers

[Riptide]

I ended up discovering that when I setup a second emissions tune. At that point though I was pretty much done trying to get it to pass with spacers and the original tune.

In the future if the car won't pass with the existing setup and I have to try spacers again I'll re-enable the rear O2 sensors.

 

[07 Boss]

I ended up discovering that when I setup a second emissions tune. At that point though I was pretty much done trying to get it to pass with spacers and the original tune.

In the future if the car won't pass with the existing setup and I have to try spacers again I'll re-enable the rear O2 sensors.

The regular spacers or spark plug anti-foulers are hit and miss as far as success. The mini-cat spacers work for sure.

 

[GlassTop09]

I have mini-cat spacers and pass OBDII smog testing and never throw a cat code. Going on 2+ years now. Never tried the regular spacers or anti-foulers but sometimes they can be hit or miss. I also have a 3-valve and I seem to remember the coyote motors were a little harder to fool. I have in the past built my own cat sims from few bucks in Radio Shack parts and they worked flawlessly for a couple of years too. But again it is my understanding that this does not work for the coyote.

Are those mini cat CEL eliminators from Big Daddies Garage? They make a set that looks just like these you're showing to tame the Dodge 6.4L modified Hemi's………...

Just curious...……….

 

[Gabe]

The Coyote PCM will most likely laugh at the spacers and keep popping 0420/0430 codes.
It's way too picky to care, unless you have OEM cats on the car you'll probably be dealing with the codes.
Or of course have a tuner shut off the rear O2's

 

[Riptide]

If I run into problems passing I may throw the spacers back on and attempt to resolve the issue with a tune change at that point. If that fails plan B is to put the stock cats back on and then have vmp update the tune for me. They'll encrypt it though so unfortunately I won't be able to make changes which sucks.

 

[07 Boss]

Are those mini cat CEL eliminators from Big Daddies Garage? They make a set that looks just like these you're showing to tame the Dodge 6.4L modified Hemi's………...

Just curious...……….

Yes, Big Daddies is where I got mine from. I had to get the 90* ones to fit in my sensor location, but yes, those are the ones.

 

[07 Boss]

If I run into problems passing I may throw the spacers back on and attempt to resolve the issue with a tune change at that point. If that fails plan B is to put the stock cats back on and then have vmp update the tune for me. They'll encrypt it though so unfortunately I won't be able to make changes which sucks.

The Coyote PCM will most likely laugh at the spacers and keep popping 0420/0430 codes.
It's way too picky to care, unless you have OEM cats on the car you'll probably be dealing with the codes.
Or of course have a tuner shut off the rear O2's

Won't work with regular spacers, not on a Coyote motor. You'll need the mini cats and then still I'm not sure as I don't know anyone running the mini cats on the Coyote. So either try the mini cats or install cats.

 

[GlassTop09]

Yes, Big Daddies is where I got mine from. I had to get the 90* ones to fit in my sensor location, but yes, those are the ones.

Thanks!

I thought that these were from them. I actually bought the Big Daddies Garage 90* cell eliminators w\o the mini cat section for my Stang to also fit in my rear O2 sensor location (I have them active in the ECU). I found out that if I lugged the motor (like going up an incline in 5th gear w\ accel pedal past 35%) this would set off the MIL w\ P0420\P0430 codes in my car (running Kooks 1 5\8" LT headers w\ Kooks Catted X-Pipe), otherwise no issues. Checked the FF data & saw that the cat operating temps were @ 1350*F at MIL but all other readouts were within specs. Looked at all O2 sensor test data....all tests results came back OK so it appears that the ECU is programmed for a max OEM cat operating temp somewhere <1350*F to protect the OEM cat substrate (looked hi & lo for any data on this from Ford but found none to date). My Kooks Hi Flow Cats substrate is rated for 1500*F max operating temp (found on Kooks website) so I don't know if the max cat operating temp threshold can be changed in the ECU tune/firmware to match the Kooks cats so I installed these to keep this from happening again since Big Daddies rated these to handle up to a 6.4L engine I didn't order the mini cats section & to date I haven't had a MIL since installation 1 1\2 yrs back. I have swapped out the OEM camshafts w\ Lunati VooDoo #21270700 camshafts & car retuned since then but so far no issues....not even a pending code is set so all good so far.

I asked as I recognized the construction looked very similar to mine which I had bought from Big Daddies Garage.