View Poll Results: What is the status on your aftermarket headers?
I installed aftermarket headers, and I've never had a CEL.
0
0%
I use a mechanical (screw on thing that moves the O2 sensor back) anti-fouler that has fixed my problem entirely.
62.50%
I use a fancy electronic anti-fouler and it has solved my problem.
0
0%
I've tried every fix and I still have a CEL. I'm either unlucky, or I hurt my O2 sensor somehow.
6.25%
Voters: 16. You may not vote on this poll
Header CEL Situation Round-Up
02-04-2007, 03:08 AM
#1
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Thread Starter
Join Date: Jan 2007
Posts: 80
Header CEL Situation Round-Up
Well, since my headers are on the way and I'm fairly worried about the CEL situation (I have a mechanical CEL screw-on anti-fouler coming also) I figured I'd survey the whole board to see where everyone is at. As most of you are well aware, adding aftermarket headers chops the first cat in the TC off, making the secondary O2 sensor in the s-pipe unhappy.
If this is useful, maybe we can sticky it and get closer to an understanding of how widespread this problem is.
If this is useful, maybe we can sticky it and get closer to an understanding of how widespread this problem is.
02-04-2007, 03:21 AM
#2
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Team ScioNRG
Join Date: Jun 2006
Location: Portland, ME
Posts: 347
This is a great poll. I just got my dc headers today for really cheap but I am concerned about the CEL and inspection here in Maine when April rolls around. But since its taking the 1st Cat away, I might just as well keep it only for show time. I hope people respond to this. 
02-04-2007, 03:22 AM
#3
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Join Date: Aug 2006
Posts: 265
i dont have header anymore but when i installed the dc header i installed the antifoulers as well and never got CEL...
im thinking its a hit or miss kinda thing...
my friend's s2000 threw a CEL when he removed his cat even when he used antifoulers... different car but... idk
which company u got?
im thinking its a hit or miss kinda thing...
my friend's s2000 threw a CEL when he removed his cat even when he used antifoulers... different car but... idk
which company u got?
02-04-2007, 07:36 PM
#12
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Team ScioNRG
Join Date: Jun 2006
Location: Portland, ME
Posts: 347
When I think about it, i recall my state inspection officer telling me I cant touch my cat, and since its on the header I wonder if I can change the mid pipe with the 2nd cat.
Would using an anti-fouler that pushs the senosr back fail inspection?
Would using an anti-fouler that pushs the senosr back fail inspection?
02-05-2007, 04:36 AM
#14
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Team ScioNRG
Join Date: Jun 2006
Location: Portland, ME
Posts: 347
wow, then I guess my DC sports header is for nothing, But I know mods when Im on my way to shows are okay. I read something like that about other mods in my state inspection manual that was in pdf format.
02-05-2007, 01:36 PM
#15
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Scinergy
Join Date: Jul 2006
Location: Springfield
Posts: 265
I posted that I didnt have a CEL after the Antifouler but when I got the custom catback the CEL came on about 400 miles after. I restarted my ECU and havent had a CEL yet and after about 500 miles now.
03-20-2007, 10:14 PM
#16
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Join Date: Sep 2006
Location: South FL
Posts: 134
Stock exhaust + Megan header
I got the cel with 40 miles. Then I installed the antifouler and got my CEL at around 185. I reset the ECU to see how long it will last this time.
It seems that the only header that causes this type of problem is the Megan. DC sports and AW are working fine with the antifouler, apparently. Therefore, someone with the Megan header who does not have the CEL on, please share the trick!
I got the cel with 40 miles. Then I installed the antifouler and got my CEL at around 185. I reset the ECU to see how long it will last this time.
It seems that the only header that causes this type of problem is the Megan. DC sports and AW are working fine with the antifouler, apparently. Therefore, someone with the Megan header who does not have the CEL on, please share the trick!
03-22-2007, 02:59 PM
#18
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Join Date: Sep 2006
Location: South FL
Posts: 134
Those of you still looking for a solution or for instructions on how to do the antifoul trick, check the thread bellow. It's more likelly you will get an update there...
https://www.scionlife.com/forums/vie...=asc&&start=40
https://www.scionlife.com/forums/vie...=asc&&start=40
03-24-2007, 03:50 AM
#19
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Join Date: Apr 2006
Location: Mile High Hell
Posts: 641
I have a megan racing header V2, been on for over 7500 miles. use a mechanical antifouler made by yours truley. been great no check engine light up untill about 100 miles ago. got a code for secondary o2 no signal. pulled out my anti fouler and the small hole on the bottom was plugged with carbon build up. cleaned it off and has been great since.
