last night after I got of school the CEL or SES ( why do others call it CEL) came out, I was pissed but then also expecting this thing to come out after I installed my kamikaze headers and downpipe. The most recent mod I did was the Magnaflow high cat which was installed last sunday. Do you guys think that I should go to the mechanic and get the reading for the SES or should I just let it go because its just part of having all the mods in my car?

PS: is it also a good idea to get that recall done after I already change my cat?

 

Go to Autozone and they will check the code of your SES light for free.

If you have an aftermarket header you don't have to get that new recall.

 

If caused by the header, it will be P0421 Warmup cat treshold crap

Learn to live with it, get the Auterra scan tool and clear it when it comes on, flip the cat, get the mech o2 fix. Those are your options.

 

So even with LANCER oz es ls the HFC throws a CEL?

I've seen the big Evo thread where they discuss it, but there hasn't been one in the lancer threads.

WADAD

 

Are you guys implying the o2 simulator fix only gets rid of this code p0420 and not the hearder one?

 

autozone. 3 dollars. fixed.

 

what do you mean just 3 bucks at autozone? what will they do with it?

 

I think he is talking about the anitfoul adapters.

 

I have a RPW Race header, Magnaflow HF cat, and magnaflow catback setup, with intake, and I have NEVER had a LIGHT on or a code.

 

what the heck is that???

 

its a 3 dollar way to get rid of the cel light

 

Here, I'll explain things in plain English, and very clearly, yet again because people never search.

Your check engine light is coming on because of the header you installed. The stock header has a pre-cat built into it. That is what the second O2 sensor is looking for, that the stock pre-cat is working. Now that cat is not there, so the second O2 sensor is throwing a code.

You can fix it in a few ways.

1. Turn your stock cat around, lengthen the second O2 wires (stock won't reach with cat turned around)
2. Do the mechanical O2 fix, pulls the second O2 sensor out of the exhaust flow a bit, and tricks the O2 into thinking the pre-cat is there
3. Buy an electronic O2 simulator from Summit, Perrin, etc that emulates the second O2.

 

THanks Vikk...

Thinking about getting a HFC down the road and just want to be sure.

WADAD

 

That he did not get a code is probably a stroke of luck. Might be the RPW header design. In about 99% of the cases, if you remove the stock header, you will get a CEL.

 

I've got the RPW as well...it's been well documented that nearly all with the RPW don't get a cel. I was just wondering if the HFC could do the same.

WADAD