P0420 & P0430 after DTLT headers

I installed some long antifoulers on the new rear O2 sensors and thought I was in the clear, but both codes popped up recently.

Since O2 sims are unobtainium, are there any other solutions?

Tuning to turn them off?

 

does it still have cats????

 

Angled anti foulers are all I’ve seen work on Tacoma

 

Rear cats

 

I’ve never seen angled antifoulers, do you have a link?

 

Guess you have nothing to lose but im guessing black electrical tape over the light is your only hope....
Got nothing to lose by trying this other AF once you figure out what it is...

So the front 02 sensor is screwed into the header somewhere?

 

Had this issue too. Solved it by stuffing some 0000 steel wool inside the foulers. Hope this helps

 

Think they’re called J-style defoulers.

 

I’ll try the steel wool first, and then the J-style antifoulers. Thanks for the tips.

 

Before the front cats