Gotts O2 Mod
 

Ok...I'm going to do it...I am tired of the P0430 code...I can't afford the California approved Catalytic converter (OEM Ford is only choice)...

I bought the 18mm non-fooulers (Dorman 42009...they did have a tapered one...is that better/worse), drilled one to 1/2"...what should I expect when I take a wrench to the O2 sensor? Is it going to be siezed? Sound like a 5.4 3v spark plug coming out? Is it going to break off? I did buy a can of PB Blaster...will it help?
Thanks in advance to the all knowing members here!

So I did the mod to the drivers side O2 sensor...observations...

Dorman 18mm non foulers are not large enough in diameter to get the sensor into...1/2" hole wouldn't allow my sensor to thread all the way into it. After boring it out further I was able to get the sensor into it most of the way, but when I was tightening it up, the non fouler broke...I bought a set of tapered non-fouers, and drilled out, bored it out further...after stacking the washers between the sensor and the tapered non fouler I was able to get it to fit...So, I used a tapered, and non tapered together...

Removal and installation could not have been easier...7/8" end wrench loosened it right away. Unthreaded by hand, and re-installed by hand, and snugged it up...

So far, no leaks, and no codes...I did it Tuesday afternoon 1/20/15 start mileage 170,283...I've done about 200 miles and no codes (doesn't really mean anything...codes vary from 90-580 miles apart depending on driving conditions).

I have looked at the live info on my scanner...the O2S2 is not switching as fast...fuel trims seem to be more agreeable...I guess time will tell if this works for me. I have lived with the P0430 codes for about 3 years now...My truck has even passed CA smog check (I live in an enhanced smog check area too...they dyno the vehicles during the test) in between codes.

Regards!

About 1300 miles and no code...