O2 Cheater, your thoughts?

[ArkansasMystic]

I have a set of MILs on my 96 Cobra (Flowmasters, no cats). They have quit working. I had my brother build a new set of MILs, but he left before he could get a chance to install them. Now neither one of use remember which way they wire in, and I'm hesitant to do it by trial and error. I've found this o2 cheater, several people (including Mustang owners) have had good luck with it. I think I may try this later on this week, any thoughts about it?
http://forums.evolutionm.net/showthread.php?t=215795
Let me know what you guys/gal think. Thanks!

[Joey5.4]

do you have a programmer? I have never used mils, I just turn the O2's off,hell on the lightning I had plugged the mid pipe so the connecrtors werent even hooked up.

[ArkansasMystic]

Nope, no programmer, if I did I would just have them turned off.

[04_S/C_GT]

I know a guy on base thats makes them, no modifications needed. U need to check ur exhaust cus with my prochamber the o2 sensors r almost facing each other so when i put in the defoulers the o2 sensors hit each other and i could only get one in. If thats the case then i think he also makes some that r turned.

http://i498.photobucket.com/albums/rr350/dj88456/PC9900-1-1.jpg

[302Stang]

On the '94 I've got an o/r H pipe, no cats, and no piping after the H pipe. (No mufflers or anything...) When I installed the H pipe I sealed off the smog stuff and the places for the O2 sensors... I'm not running any and it hasn't caused me any problems at all. Not even a check engine light.

[04_S/C_GT]

On the '94 I've got an o/r H pipe, no cats, and no piping after the H pipe. (No mufflers or anything...) When I installed the H pipe I sealed off the smog stuff and the places for the O2 sensors... I'm not running any and it hasn't caused me any problems at all. Not even a check engine light.

U do realise thats a good thing right and thats how its supposed to happen right?

[stumbaugh]

That 94 would forsure run ALOT better if you put mufflers on the end of that H pipe. It doesnt have any back pressure running no mufflers.

[302Stang]

U do realise thats a good thing right and thats how its supposed to happen right?

I know that's good... but that usually isn't what happens. It usually sets off a check engine light. On some cars it'll do it when you take off the cats and on some it won't. On some the lack of O2 sensors will set it off, some won't.

The lack of mufflers is just temporary. I've been looking at different exhaust setups so I've just left them off until I decide on what I want since I've been unbolting and bolting on exhaust systems for the past couple weeks. It runs better without the mufflers actually... it's hella louder though. At idle it sounds cammed, at 4500 rpm it sounds like a race car. Anywhere between 1000 and 4500 rpm it sounds like a dodge pickup. Lol.

[04_S/C_GT]

When the rear 02 sensors r in they r looking for unburned fuel. If u remove them then the computer thinks that the cats r filtering it all out and wont throw a code.

[ArkansasMystic]

OK, went by a local parts store today to pick up the stuff needed. Guy couldn't give me what I needed, but he kept claiming that I needed to go to Napa and they will have a plug I can use. He said you just remove the rear sensors, plug to hole, and you're good to go. Doesn't make sense to me, seems like no reading would cause a CEL. Also, if it was that easy, why aren't more people doing it? I'm planning on trying a different parts store this weekend, unless somehow just removing them and plugging the hole will help. Thanks.

[stumbaugh]

no that will not fix it. he must be into imports :lol: Just try another parts store.

[Jimmy]

What you can do to get rid of this mess, is to call latemodel restorations supply and get a set of mil eliminators, they r just plug and go no worrying bout which one goes on which side, thats what I have on my car and I have absolutely no problems with them.

[ArkansasMystic]

I've got the non-foulers ready, just gotta get somewhere that I can lift the car and install them. I'm gonna try to get a tuner, working on a deal as we speak. That'll solve all the problems. Thanks!

[Jimmy]

man if you need to, i gotta shop behind the house we can do it in, don't have a lift but got, jack and jackstands, just let me know if you want to or not

[ArkansasMystic]

Thanks! We'll see, I am hoping I can get the tuner and not have to mess with it. I really appreciate the offer.

[Jimmy]

not a problem, netime I'm not working

[ArkansasMystic]

Well, I finally got around to installing these last night. I'll be making a trip this weekend, so will know for sure if it works or not soon. So far so good though, no CEL yet.

[stumbaugh]

Be sure and let us know how it does. Im interested to see how they do.

[ArkansasMystic]

Will do. I'm kinda ticked because I spent probably $30-$40 on stuff to make my own MIL eliminators, never got them put in and then read about this. For $5 no more CEL, gotta love it!

[bcrass]

I have on 07 stang Long tube headers and or H pipe diablo tuner cant turn off rear o2 sensors, cant locate any way to delete them? any ideas. i keep throwing a code about every 10-12 driving cycles?

[ArkansasMystic]

So far so good on these o2 cheaters. I've got a CEL, but it's not related to the o2's. After 500+ miles of driving, no o2 codes. Typically after you turn the light off it'd only last for about 100 miles. Cheapest/easiest fix I've found.

[abdullaGT]

question! do u do this to the front or rear o2 sensors?
thanks!

[06invertmini]

Rears.

[ArkansasMystic]

Yep, rears. I'm not tech so I can't explain it well, but I'll try. The front two sensors are required for the car to run right because they control several things on the car. The fronts are in front of the cats. The only thing the rears do is check to make sure the cats are doing their job (the rears are behind the cats). As long as the rear sensor gets a lower reading than the front, all is fine. When you do what I did and run without cats, the rears get the same reading as the front so it throws a check engine (saying cats aren't functioning). By using the spacer, you move the tip of the sensor out of the middle of the exhaust pipe and it doesn't get a good reading. This is enough to show a lower amount than the front ones, so it turns of the check engine light.

[adam2kgt]

ArkansasMystic, you got it pretty close when you explained what the cheaters do. As for 302Stang, the reason your car runs okay without cats or the rear sensors is because you are using a different OBD system. 96 and up cars have rear sensors to check the efficiency of the cats, and like ArkansasMystic said, if they read the same, they throw up a CEL. The MIL's are basically just a resistor to alter the amount of voltage the computer sees from the rear sensors. 05 up cars can't turn off the rear sensors with a standard tuner, but certain shops can if they have the newest SCT tuning software. Good luck finding one, though!

[AcidKoolz]

Sorry to bring up an old thread, but can you use these cheaters on an 05?

[ArkansasMystic]

A lot of guys are using them on various vehicles. I've not known anyone with a s197 Stang though. It'd cost five bucks to try, so it's worth a shot. I know it worked perfectly on mine, much better than having to wire in MIL eliminators.