i3oosted

It threw a different code P0141 which is the heating element in the o2 sensor, I think its not warming up in time now. Not sure, erased it and will see if it pops up again.

EDIT* So apparently when putting on the mini cat extenders I broke the heater wire off the passenger o2 sensor, put another one on and so far so good, no CEL's.

FordApologist

Hey great write up on the install.. I just bought my CFV Downpipes utilizing that Black Friday deal.

So you used two of the defoulers per catalytic converter?

And you only need the defoulers for the o2 sensor that screw into the cats.. not the upstream sensors?

Thanks!

FordApologist

Hey great write up on the install.. I just bought my CFV Downpipes utilizing that Black Friday deal.

So you used two of the defoulers per catalytic converter?

And you only need the defoulers for the o2 sensor that screw into the cats.. not the upstream sensors?

Thanks!

gebo21

Yes ,exactly

Sweatmachine

Bumping an old thread here....I've got a P0420 and P0430 after new aftermarket cats and O2s. Is this what I need? They make several different yet similar ones...

https://www.autozone.com/ignition-tu...009/730544_0_0

cvf-jason

Folks generally have had good luck with these when they did get a CEL:

http://www.bigdaddiesgarage.com/mini-cat-cel-fix.html

Sweatmachine

Kinda expensive though.

dsg2003mach1

cant recall if that's the right part number but you can search the forum to verify. If you go this route you need 2 packs - 4 total. You have to drill out the center of two of them. The drilled one goes inside the non-drilled one. I would NOT use their little crush seal. I tried it that way and ended up with a rear sensor lean code because it was causing a small vacuum leak. The little mini cat deals may be expensive but might work better/be easier. I ended up taking out the non-foulers all together and so far after 1.5 weeks my SPD downpipes aren't throwing any codes

Sweatmachine

I ended up buying the "mini cat deals" and installed them today. Hopefully that's all she wrote with the damn codes!

Twin snail putput

I used two of these: http://www.bigdaddiesgarage.com/straight-cel-fix.html

No Cel and it's also the only thing that didn't have an exhaust leak on my CVF downpipes, everywhere else that they could leak, did.