OK heres the solution to your guys problem. All the the 2nd O2 sensor reads is the exhaust flow. The code should be something like too high of flow or something. It insures there is a cat installed and still in good condition. When you put the headers on, you free up the exhaust. This increasing the flow rate. You put the eliminator on to restrict the air flow to the sensor. Some peoples cars have a more exhaust flow depending on mods and motor and need to install a second eliminator on the 2nd O2 sensor. Trust me, my lancer is turboed with a test pipe and I ran with just one elimiantor for a while and then the CEL light came on. Put a second eliminator in and it solved the problem.

 

You said a 2nd eliminator on the 2nd (lower) o2 sensor, where was the first one? Did you just double it up? Or did you have an eliminator on the first one too?

 

Just double up the second o2 sensor. Dont do it to first one. You need all the air flow to that one.

 

So since you doubled it up, did you use 2 RRM CEL eliminators or did you use the anti-fouler technique?

 

I used two anti-foulers but the are both the samething. I had to bore out the anti foulers i used a little bit. Just put two rrm ones in.

 

That being the case, I wonder if just 1 RRM CEL eliminator would work :-/

 

The whole reason im telling you to put two in is if one doesnt restrict the flow enough and you still get a CEL. Please read the whole forum carefully.

 

a) I don't have this issue.
b) I have read the whole forum
c) I was just curious how much of a difference there was between the anti-foulers and the rrm eliminator. I understand why you said to use 2 anti foulers... but i'm wondering if 2 RRM would be necessary in MOST cases... slow your roll in criticism

 

Bro.... ill roll with the criticism if you ask a question thats already been answered in the same exact forum. Obviously, like people have said in this forum that they have used one RRM eliminator and i has not worked. SOMETIMES you need to put another one on b/c of other mods you have. If you have nothing done to your car and only put headers on then you should be good with one. Most the time you run into the problem with too high of flow with the test pipe because you remove the cat.

 

I understand all that. I understand the concept. Moving the o2 sensor further away from the pipe lets less air flow in, making it think it's normal. Adding 2 does this more. I got all that.

I shouldn't have said this: "That being the case, I wonder if just 1 RRM CEL eliminator would work :-/" Mainly because I was buzzed off my ***. Sorry.

The main reason I was asking is because the RRM eliminator is $20 and 2 anti-foulers is like $5 (though you have to bore them out). Just seems it'd be best to buy the foulers if they are exactly the same size / dimension / bore (self done) / etc... which is what I was asking... sounds like they are.

 

You do have to bore them out just a bit. All the stuff is the same. If i remember right there are a couple of sizes. Make sure to get the right one. But that can simply be done with a grinder. I went the fouler way b/c they were cheap, and i worked at a shop to the boring. RRM is just trying to make money like any other company. Id say try the foulers out first.

 

Damn I wish I read this earlier. Just got the CEL eliminator put on my RRM header, and now i realize its supposed to go on the 2nd cat....hence the CEL still being on.

If the CEL eliminator is only on for a day, will it get stuck?

Also, I had someone else put this on for me and I'm wondering how hard it is to take off?

 

it shouldn't be too hard to get out--better hope your 2nd O2 sensor isn't too rusted though. although you're in FL so i doubt you'll have too much trouble with that.

 

Yah, you should be good, especially if he did what he was supposed to and used anti-seize.

Good luck on the 2nd o2 sensor ...

 

Well, today I found out that he didn't use anti-seize....so when I went to another shop to have them take it off, it was pretty much stuck, but they were smart enough to stop b4 any damage was caused. Is there any way I can take this thing off? What happens if I just leave it on?