Offroad X pipe install w/non fouler o2 trick

Black_GT · Aug 6, 2010

So Installed my Catless X pipe with no tune about a month ago. I used the spark plug non-fouler trick, so I wouldn't get the dreaded CEL. This mod actually works! I haven't received a CEL once. If anyone is considering going with an offroad exhaust without the expense of a tuner or tune, then this is a great alternative. My car drives the same if not better. I have better throttle response and mpg. Just thought I'd share...that is all...

Link of how to:

http://forums.evolutionm.net/evo-how-tos-installations/208195-5-o2-cheater-non-fouler-how.html

S197gt07 · Aug 6, 2010

Wow, thats pretty awesome. I'll save that page for when I do my exhaust, as I plan on going O/R, and this is a sweet mod.

808muscle · Aug 6, 2010

I did the same thing with my viper truck. It's a cool trick.

Irishman · Aug 6, 2010

Did it on my STi and it worked flawless.

Ignatowski · Aug 6, 2010

Used those exact instructions when I installed a test pipe on my Evo 8. Worked like a charm

SirKnightTG · Aug 6, 2010

Can't beat a good exhaust hack.

Rob72 · Aug 7, 2010

I picked up the real thing from Brenspeed for $20 including shipping. No drilling required on these.

S197gt07 · Aug 26, 2010

Sorry to dig this up, even though its only a few weeks old.

So, if i get an O/R H pipe, install the foulers, and have my tuner turn ON the rear O2's, I wont have to worry about the CEL/emissions? (I know the owner of the station I get my sticker at, so the visual aspect isnt a problem)

Thanks guys.

Mach1Run · Aug 26, 2010

I just put a catless pipe on my car last weeked and used the brenspeed non foulers. 25 miles later and I have a cel.

Gonna have to put the cats in after all I guess.

HEMI LOL · Aug 26, 2010

my car must be stubborn. ive got the breenspeed ones, and i get a CEL weekly. same code everytime. P0420/P0430

Mach1Run · Aug 26, 2010

I think I may try adding a 2nd non fouler to the BS ones to see if that works to make it more like the ones in the walkthroughs.

Mylilpony · Aug 26, 2010

interesting....

SirKnightTG · Aug 26, 2010

I've heard about people having to stack two foulers on there.

I wondered if it would work to buy a cheap O/R midpipe that works with your headers and have an exhaust shop cut/weld your stock cats in there. Then flow would be cut down enough to not get a code for emissions testing perhaps. High flow cats can likely still cause a CEL but stockers should not.

ReMustang05 · Aug 27, 2010

I wonder if you could do this with longtubes/no cats and pass emissions?? HMMMM? Might be something to look at for those who have them.

Top00Cat · Aug 27, 2010

Thats what I want to know. will it work with long tube headers. Guess I am going to find out

S197gt07 · Aug 27, 2010

Keep us posted!

NA-Stang · Aug 28, 2010

Sorry for hijacking the thread, but I just had my h-pipe installed. I got a new tune that was supposed to turn the o2 sensors off, but I think he forgot to do it. I talked to the guy and he said he is going to send me a new tune with them shut off, but it won't be until Monday. Am I going to hurt anything running the car with no 02 sensors (they holes are just capped) and them not shut off?

Mach1Run · Aug 28, 2010

Longtubes, offroad x, Brenspeed nonfoulers stacked on normal nonfoulers - no cell so far and I am about 25 miles past the point where it would come on with only one set of nonfoulers.

SirKnightTG · Aug 28, 2010

NA-Stang said:
Sorry for hijacking the thread, but I just had my h-pipe installed. I got a new tune that was supposed to turn the o2 sensors off, but I think he forgot to do it. I talked to the guy and he said he is going to send me a new tune with them shut off, but it won't be until Monday. Am I going to hurt anything running the car with no 02 sensors (they holes are just capped) and them not shut off?

The rear o2 can be shut off with no issues. Their job is only to detect if the cats are there and working. That's all.

Top00Cat · Aug 28, 2010

50 miles no cel with 2 non foulers. longtubes, o/r x, and hot rod cams. going for re-inspection monday. wish me luck ha

Offroad X pipe install w/non fouler o2 trick

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