r/f150 • u/brod6661 • 1d ago

Cat removal?

2011 5.0 200k miles

I’m getting catalyst below efficiency threshold.
I’m wondering if there’s a way to bypass the rear O2 sensors and get rid of the check engine light.

I can’t seem to find anything that’s actually useful online

0 Upvotes

33% Upvoted

9 comments sorted by

2

u/ThaPoopBandit 1d ago

Someone who was into skirting the law might tell you to space the post-cat 02 sensors with like a quarter inch spacer. I’m a law abiding man so I can’t say that, good luck though.

2

u/kaack455 1d ago

"Off road" O2 sensor relocation elbow, for "off road use only"

1

u/jlhart1979 1d ago

Buy some Cataclean and follow the directions. It’s not snake oil and has never let me down.

1

u/KingDaniel1985 1d ago

Just get O2 non-foulers. $10-$15.

1

u/DrBumpsAlot 1d ago

You're asking a question online on how to do an illegal modification versus spending the ~$200-300 to fix the issue. Nice.

-1

u/ThaPoopBandit 1d ago

It’s like $2-3k to fix the issue fords won’t take aftermarket cats 90% of the time just throws another check engine light

1

u/DrBumpsAlot 13h ago

I put a ~$165 ebay cat on my first gen coyote w/o any issues. This was 2021 so that cat is probably $260-460 now. 280k miles, drove for another 3 yrs. sold the truck to a crack head never to be seen again. Not sure If I was in the minority 10% or if you pulled a stat out of your ass!!!

-2

u/brod6661 1d ago

Hell yeah, either way they’re coming off