ok so i have a dc header and i did the anti-fowler thing on the lower o2sensor which was suppose to fix the check engine light well my light came on so i took it to the dealer i work for since they would fix it for free and it says cat efficency low which mean bad cat well duh its bad its missing lol.. well anyways what are my options to fix this i hate have the light on.

 

That sucks, i guess i am wondering the same thing. I have the megan racing headers and thiers has the problem of the cat getting loose, what mine did. So the anti-fowler won't fix it, what are we to do???

 

yeah i did the whole 2 anti fowlers drilled one out and i used nylon tape to insure a seal i had a toyota tech install it i used all new gaskets and nuts no leaks i even out in a new up o2 sensor because the threads looked questionable... i guess o2 sim is my only hope now... i have about 1000 miles on my dc and just go the light saturday

 

check out zpi's o2 sim

 

uh oh dont take it to the dealer with the headers... no no

 

i work for them so they look at it as if there are no mods like if it was a sensor or something they would of replaced it... a perk of working for the dealer i guess

 

thats the thing they dont have to tell toyota your car was modified so chances are be cool with them and they will hook you up they get paid off of work at most if they replace something toyota will ask for the part back to make sure they are not claiming fake work and thats it unless the dealer tells toyota your car was modified they wont know and the dealer will get paid i have broken things on my car and had it replaced under warrenty i scratched the stereo door and they told toyota it was not working right and replaced it there is ways around everything trust me