Non-foulers for 02 sensor

F

Flexthis2011EB

New member
So I have a CEL for a bad cat and was wondering if on a car this advanced if i could just put on a non fouler on the downstream O2 to delete the code? The cat has broke apart internally and now is free flowing.
 
Damn, your car is always action packed with issues!

And non foulers won't work because it's a new logic for determining catalyst efficiency.....It doesn't appreciate being lied to.
 
AJP turbo said:
Damn, your car is always action packed with issues!

And non foulers won't work because it's a new logic for determining catalyst efficiency.....It doesn't appreciate being lied to.
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Haha. Good way to put it. And yea, this car hasn't been very nice to me.
 
I dont understand how the cat could have broken apart and is free flowing.  If a cat breaks up, it will clog/restrict the exhaust system.  Not sure whether the "Fooler" solution works, but the downstream sensors are narrowband.
 
Definitely feel for ya and know the feeling because mine also has been acting quite naughty as of late,nothing that a pair of ole whips and chains cant handle,lol. what Exact DTC are u showing?  Z
 
ZSHO said:
Definitely feel for ya and know the feeling because mine also has been acting quite naughty as of late,nothing that a pair of ole whips and chains cant handle,lol. what Exact DTC are u showing?  Z
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P0430 catalyst efficiency below threshold bank 2. I also here a rattle sound around the cat area which lead me to thing it broke apart but like Shodded said, I guess that's not possible so idk.
 
SHOdded said:
I dont understand how the cat could have broken apart and is free flowing.  If a cat breaks up, it will clog/restrict the exhaust system.  Not sure whether the "Fooler" solution works, but the downstream sensors are narrowband.
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Any ideas on what could be wrong then? P0430 code with rattle sound by cat area but no significant performance decrease.
 
SHOdded said:
Maybe it is early stages, are you sure the heat shield and clamps are secure?
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Just found the rattle. It stopped when I pushed my foot onto the flex pipe. And i can specifically hear it now coming from the flex pipe. How'd that happen? The mesh around it looks fine. Something in there?? 🤔
 
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