Hell Yea.......diggin shit up!:lol:


So what's the skinny on having to do this? I saw that most people say that they don't get a CEL when gutting the 1st cat. Are they just lucky? Have other people had to do this, hence the write up, or were you just throwing it out there "just in case" someone were to get a light?

 

If you delete the first cat inside the manifold you dont need to do this. This how to is to get rid of the CEL if you delete the second cat.

 

Cool....thanks for clearin that up..:high5:

 

or just turn it off with HPT

 

do you have to use the gaskets as well... the ones at the autoparts store near my house sell them with out the gaskets...

 

there's no gaskets on the o2 sensors.

 

but the kit pictured above comes with gaskets and i was just making sure you dont use them, thanks

i did this mod about a week ago right after i delted my second catand my CEL turned off. now.... it turned on again last nihgt. i did everything as said.. has this happened to anyone else?

 

Worked on my buddys car. Maby you need the o2 sensor further away. Mod another non fouler and put it in between the two.

 

I just did this except instead of cutting out the cat i just cut right next to the cat and gutted it.... I put two non foulers but I'm still getting a CEL should I get one more non fouler

 

thinkin about that too, lucky i bore out two of them to 1/2"... one to practice at first, then the second one... hopefulyy it helps.

 

Re: How-To: Install An O2 Sensor Non Fouler to Eliminate a Check Engine Light with Pi

great write up hopefully i wont need to do this when i gut the cat or do u guys think i should just do this mod right away since ill but under the truck anywayz?

 

Re: How-To: Install An O2 Sensor Non Fouler to Eliminate a Check Engine Light with Pi

You onlu have to do this if your gutting the 2nd cat.....

ps- I just deleted the 2nd cat and two of them worked perfect for me.

 

Re: How-To: Install An O2 Sensor Non Fouler to Eliminate a Check Engine Light with Pi

Great mod and thanks for the info! Will be doing this after I install the new SC.:high5:

 

Re: How-To: Install An O2 Sensor Non Fouler to Eliminate a Check Engine Light with Pi

SC? Supercharger?





Calling my exhaust dude tomorrow to see how much he will cut my cat off for me :naughty:

 

Re: How-To: Install An O2 Sensor Non Fouler to Eliminate a Check Engine Light with Pi

I cut my 2nd cat off the day I got my truck and never had any problems, is it different because I have a 4cyl? So if I hollow out my first cat I wont need any foulers? I thought for sure I would need them on the manifold cat?

 

Re: How-To: Install An O2 Sensor Non Fouler to Eliminate a Check Engine Light with Pi

I cut my 2nd cat off the day I got my truck and never had any problems, is it different because I have a 4cyl?

Not because you have a 4 cyl but because you have a 2007 and the secondary cat is not monitored.

So if I hollow out my first cat I wont need any foulers? I thought for sure I would need them on the manifold cat?

Yes, you will need them on the 2007 manifold cat, it is monitored.


:salute:

Of coarse Al Gore says no but really is global warming an issue really? :shrug: :lol:

 

Re: How-To: Install An O2 Sensor Non Fouler to Eliminate a Check Engine Light with Pi

If the o2 sensor is before the cat in the manifold on your 4cly like the 5cly are then you wont need any. But since you gutted your second cat allready you may throw a check engine light for the rear o2 sensor when you do the manifold cat. If that's the case just do the o2 sensor trick.

The o2 sensor mod is universal so it should work on just about anything.

 

Re: How-To: Install An O2 Sensor Non Fouler to Eliminate a Check Engine Light with Pi

Hi Guys. Thanks to all for posting the on the cheap fix. I just replaced the engine, and a 9 year old cat back system on a 99 S10 4.3 4X4 PU. Went with a "test pipe", Threw a code at about 40 miles. Bought the anti-foulers and milled the top one to .500. The original O2 sensor was larger. .525 to be exact. When I milled it out slightly larger to .5625 the outer non-fouler broke off. The fix was to clean the mating surfaces up and silver solder the two together. If I have to add another, or make one, I'll go ahead and silver solder first and then mill it out. Hope this helps someone.

BM

 

i've hit a snag trying to do this. i replaced my O2 sensors, both pre and post cat, thinking they were bad as the stealership told me. this was about 3 months ago and i've since thrown the old ones out. the replacements ones are bosch and have a larger diameter probe so they won't fit into the anti-foul, even a 1/2" drilled out one.

would fitting some washers on the probe and then screwing it in possibly work? if i drill out the anti-foul to the size of the new probe, i'll be drilling the end off of it. i can get a hold of another oem one from the stealership parts dept but they want 80$ for it and since i just bought the bosch one i really don't want to go that route. i'm not noticing any performance issues (aside from some trans problems but thats another issue) but, the CEL is driving me INSANE, i can't stand having the damn thing on.

 

No not yet I just went and bought another non fouler I'll give that a shot and let you guys know...thanks

 

i plan on gutting both my cats here soon. not cutting the 2nd one so i will still pass visual inspection. hopefully ill only need to do the fouler trick after gutting the 2nd cat and not the first!

 

If your low enough they can't do a visual inspection

 

Just put in 3 and still throwing a cel.... Anybody have any ideas? What kind of tuners are there? Or what's the best tune company?

Sorry just stressin I really don't like having the check engine light on

 

ok lets look at your situation. you have a 2.8 correct? Also you are installing the defoulers where the 02 sensor is for the second cat (the one under the truck)? What code is it throwing? You can have the code checked at autozone for free.

 

Yes its a 2.8, and yes i installed the non foulers on the rear most o2 sensor... and the code it through last night and just now was P0420... cleared it again

 

P0420 - Catalyst System Low Efficiency. Let me see what I can come up with.

 

did you leave the very end like this or did you drill it open? like this...

 

The first non fouler i drilled out and the rest i left alone just screwed them all together