drove 280 miles with anti fouler mod, no CEL yet.

i freaking rounded the stud, Do I have to removed that stud? i am going to cut that heat shield tomorrow morning.

Hehe... I went out, bought the tool and made myself the favor of rounding it. That sucked! I kept on hammering it to see if the tool would attach to the screw and on the end, the screw went down into the header just enough to get the shield out.

I wanted to get headers but had concerns about the rasp. I already have a megan mid section so where would the other resonator go? Theres one small one on the megan :nails:

http://www.scionlife.com/tech/images/header_install_tc/11.jpg

i cant get that bold red bolt off, its a pita, i have an open wrench, but no good, i think im going to take my alternator off, ill have the same problem when i want to tighten my turbo manifold

I was careless and I rounded one of corner with cheap wrench , i was trying to take the alternator too. but after loosen the belt tensioner and the big bolt off. There is a little bolt that i have no room to get too.

having a nice set of wrenchs is important

I found another combination wrench in my house. I use the box end side.

i took some pic to help u. This pic is taking after i install the dc header. It was very hard to place the wrench when the stock header was there.
http://i11.photobucket.com/albums/a156/gammatnt/P1010001.jpg

I hammer a pipe to to the wrench. Making sure it is in and won't round corner.
http://i11.photobucket.com/albums/a156/gammatnt/P1010003.jpg

http://i11.photobucket.com/albums/a156/gammatnt/P1010002.jpg+++



Now u can hammer the wrench .
http://www.scionlife.com/tech/images/header_install_tc/11.jpg

I was careless and I rounded one of corner with cheap wrench , i was trying to take the alternator too. but after loosen the belt tensioner and the big bolt off. There is a little bolt that i have no room to get too.

having a nice set of wrenchs is important

I found another combination wrench in my house. I use the box end side.

i took some pic to help u. This pic is taking after i install the dc header. It was very hard to place the wrench when the stock header was there.
http://i11.photobucket.com/albums/a156/gammatnt/P1010001.jpg

I hammer a pipe to to the wrench. Making sure it is in and won't round corner.
http://i11.photobucket.com/albums/a156/gammatnt/P1010003.jpg

http://i11.photobucket.com/albums/a156/gammatnt/P1010002.jpg+++



Now u can hammer the wrench .
http://www.scionlife.com/tech/images/header_install_tc/11.jpg

looks like ill be going into my turbo install on thursday with some new knowledge, lol

thanks

My header came in today, Any way to take out the torx stud without the Female TORX Socket? YELLOW CIRCLE
http://www.scionlife.com/tech/images/header_install_tc/03.jpg


I don't want to spend $70 on a set

Glad I have an 07 so I can bypass this torx step on my heat shield but for those of you that have one, do needle nose pliers or locking pliers not work on them? I would think a pair of locking pliers would work.

anyone put in the dc header with an injen cai and magnaflow exhaust sytem? just wondering how it would sound..thanks

anyone put in the dc header with an injen cai and magnaflow exhaust sytem? just wondering how it would sound..thanks


HAHA :rofl: funny you should ask...if all goes well I'll have mine on this weekend :P stupid FedEx is taking 5 days to get everything here. I'll have DC header, Injen CAI, Invidia s-pipe, and Magnaflow cat-back. I know right now my tC has slight rasp when it is cold b/c I have an exhaust leak for one of the bolt on joints. As soon as I buy my resonator the whole thing will be welded. I know its the leak causing the rasp right now b/c as soon as the piping warms up the rasp stops...gotta love heat expansion. If you want I'll keep you updated man, just PM me a reminder.

Update, installed DC header today with Invidia s-pipe...and sounds like crap as expected. Now gotta save up the money for the resonator(s) and welding to be done. ALSO for those of you with an 07 and using this thread as a guideline, you may have to remove the bolt that holds the oil dipstick to a bracket. My header would not go on the bolts b/c it was in the way. Just take the bolt out put the header on and all that jazz then put bolt it back up to its bracket...pretty simple. Oh and the two bolts on the bottom that connect it to a mount a PITA to take off. Specially when your trying to hammer them with a rachet wrench to get them loose b/c Toyo used 1000 pds of pressure to put the suckers on the engine block. Just forewarning.

^^ Not just 07s.. I have an 05 and had to move my dipstick too. But i know others that have not needed to do so. Not sure why some have to and others don't

I have couple questions maybe u can help? I wanna get the DC sport headers for my car but it's an 06'. None of the places that I've shopped online have 06's only things for anm05' so I was wondering if it would fit? They should right,? reading from the post above that's having probs with his 06'. Also, where's the best place to buy the DC headers? Where'd you guys get them from? Also I don't want to eliminate my cat converter so will the 4-2-1 one piece header work?

As far as fitment goes, it should fit, I don't think Toyo changed their design any. I don't know the best place cause I got mine off a guy on here, but check the for sale section, and the sponsored sales section and see if anyone is getting rid of one. You will be eliminating your cat. All aftermarket headers do, that I know of. That's what helps get rid of some of the restriction on the airflow, however are cars have two. The main one, which should be on the header and then the second one is under the car on the midpipe. Having one is atleast better than two :D , however you will have to do the antifouler mod so you don't get the CEL and if you live in Cali good luck, your smog inspections are harsh over there.

thanx that helps alot but another thing I live ALL the way over here in hawaii...so do places like NAPA Auto Parts sell the anti foulers or any other place around here? One more big thing..according to some people they say that after their pau (finished) installing the headers and take it for a test drive..everything is fine going average speed but when opened up on the road it sounds like a damn honda civic. Now here in hawaii we have alot of those peps w/their civic and that's one thing I hate hearing the most. I have a injen intake with a tanabe exhaust,and so far it sounds pretty beefy and I love it. So my question is will it sound bad on my car? Is everyones car sounding like that or it just depends? Help a girl out.

First off, girl? your thing says "M" LOL anyway, yes NAPA and other autopart stores sell them. However I got this one and love it, lets you configure it in any position you want. http://www.scionlife.com/forums/viewtopic.php?t=175210&highlight=
Yes, it will sound like a damn Honda, if you have the stock midpipe with the resonator on it, it might not sound as bad, however if you have a catback system like I do, then it will sound like complete and udder crap! I'm in the process of getting two resonators for mine so it will sound a lot better ;) I love the deep tone of the magnaflow. Just FYI on mine though, it sounds twice as bad as a honda :(

oh yeah sorry, I'm using my bf's profile..as for getting another resonator, is that gonna solve the problem of the nasty ___ sound or won't? Also will an shop that installs and sells exhausts have resonators. Cuz if it's gonna sound like hondas I'm really sketchy bout getting one now.

Um, it depends, is the tanabe exhaust an axle back or cat back system? I don't know since I don't own one. If it's axle back then it might not sound too bad since it will have the stock resonator on it still. Usually it's the aftermarket ones that get rid of the rasp though. And depending on the shop, yes they should carry some resonators, not all of them do, but like main franchised ones pretty much will. Like Meinke and others like that. I have to get to work :( but im sure theres other helpful people that can get you info that you need regarding the resonator and exhaust :)

does anybody know the part number for the anti-fouler for the TC. thanks

These are the numbers on my 07 tC stock ones, I have new ones in the pipes that I bought from ZPI cheaper than my dealer wanted.

Front: Toyota 89467-33080

Rear: Toyota 89465-21070

Hope that helps ya!

thanks man you think they'll fit on my 06 though?

You know to be honest with you...I just reread your ori. post and saw the anti-fouler part and for some reason I thought 02 sensor...I'm a :loser: :P Um, I think you can just go to any parts store tell them you need two anti foulers and they will hook you up with them, not sure its one size fits all or not but I think it may be that way. Sry for the erroneous post above :P However those are the part numbers for my 02 sensors if you need those too :rofl:

lol i didn't even notice that either. well i'll just go and ask adn see. well thanks for the advice and all burt i already got a new 02 sensor for my header cause i had to strip out the old one so i just ordered another. those things are expensive man. thanks again though.

Yup, np man, as far as antifouler mod, I got this, he sells it for 25bucks shipped http://www.scionlife.com/forums/viewtopic.php?t=175210&highlight= Nice little thing too, I still have no CEL.

i just went on the link and it was saying that it wasn't an anifouler mod and only for the invidia s-pipe... does that mean it wont fit on the stock one. man i'm all confused. its casue i dont have an aftermarket spipe just the stock one.

Nope, it will actually work with the stock, and any other for that matter. I pointed that out to him after I bought it, he said he was going to change the title but I guess he didn't. Its a 90degree bend and that nut on it lets you put it in any position you want it in and tighten it, I like that feature :D but yes it was orginaly created for the invidia s-pipe, which I have, but it will work for the others. Just make sure you don't mess up your 2nd o2 sensor. Their a PITA to take out imo. Sry to confuse you man, wasn't my intention lol, I just know the antifouler mod is a hit or miss, but in all honestly I havn't heard of or read anywhere about someone having a CEL yet with his thing that he made.

alright cool. i might go about rodering one, oh and for the CEL, once i install it, do i just disconnect my battery for a few minutes then install it again and turn on my car or am i off? just cause i've been driving around with a CEL for some months now and every time i take it to my dealer they always say theirs a problem becuase you have a CEL light on. it really doesnt; bother me but i don't want any trouble with my dealer. oh and also i'm getting the spipe pretty soon also so i'll just take it off that and put it on the aftermarket one when i get it.

Um you have had a CEL for a few months now? What mods have you done b/c you shouldnt have one if your stuff is stock. Go to autozone or some other parts place and have them read the code for free, then look it up online if you don't already know what it is. And yes, once you put the header on, take out the stock o2 sensor in the spipe carefully without cross threading it and then put that part on, it screws into the pipe like a o2 sensor would, if it ends up stopping at a position not facing the plug in socket for the o2 harness then just turn it back just enough so that it points there, then take a wrench or pliers and tighten down the nut that is threaded on it. That will keep it in the exact position that you want it. Then screw the o2 sensor into the other end. When you screw the o2 sensor, make sure you use pliers or a wrench and make that sucker tight, I did it hand tight and did an addtional 1/8 turn with a wrench b/c its a hard to reach area and after about 20 miles of testing it I heard a rattling sound,...it had unscrewed itself some from the part, so I got my vice grips and turned that heck out of it, its not going anywhere now! After all the install is done, unplug the battery for a few mins, I did mine for like 10 while I cleaned up everything, then put the terminal back on and you should be set. If you getting an s-pipe soon though I would seriously just wait until you get it. That way you dont have to worry about the o2 sensor right now, and take a chance of this thing becomeing like one of them too from the heat and expansion of the piping. I doubt it would mess with it like a o2 sensor but I personally would just wait and if your already have CEL then your not going to notice it anyway :P

oh wait i'm not runnign stock though. i have an intake with the dc headers and a apexi custom back exhaust. i justw anted to get that spipe and i wanted that CEL off and i know its from my headers just because when i installed them it came on. i gues i just might order that piece and hold it until i get the spipe. thanks again man, that was a big help.

Oh, my apologies, I was assuming that you didn't install the header yet. Yeah that is def. the cause of the CEL and antifouler mod or that thing will fix it...just the antifoulers are hit and miss on our cars. Yeah if you get it just hold off on putting it on til you get the s-pipe so be safe. Oh, his shipping is a little weird too, some get it in a few days others take like a week or so, Postal Service is messed up like that I guess since he doesn't fedex or ups them.

awesome well thanks a lot man. i shall be ordering that part from him and keep it till i get my spipe. thanks again man

thx for this INFO i have passed this on to many people that are installing the DC header for there first time also this works the same on most import cars BTY ;)

*bookmarking thread.

your post was awsome, i just put the dc headers on this weekend and i had a few questions and concerns, you answerd em all, thanks...

whats up bro, i just put in Anti-Foul's and the check engine light came off, BUT, my right door and sunroof are not working now, do you know what happen or what to do?

whats up bro, i just put in Anti-Foul's and the check engine light came off, BUT, my right door and sunroof are not working now, do you know what happen or what to do?

yeah when you put the antifouler in you disconnected the battery...99%sure you did as most of us do. When you did that it disables auto up and down because the jam protector has to be enabled again. on the driver window button bring the window down half way and stop for a second. then push the button all the way down again and let the window go all the way down but continue to hold the button for about 2-5secs. 5 to be safe. Then pull the button all the way up and it should auto up. then go the passenger door and do the same exact thing, can not be done from the driver door button though. For the sunroof do the same thing. Open 1/2 way, then fully, hold button for few secs then release then push and hold til fully closed. Then push to and make sure it auto opens. All else fails, look it up in the manual but im pretty certain those are the steps, hope it helps ya.

all windows are good, but the light is still on, i made sure all was tight and the light is still on thanks for all the info though it really was a huge help

Its been awhile since i have taken a car for emissions test, does headers mean failure ? Has anyone tried yet?

i tried and failed. tryin to figure out how to pass

depends. If they just test the emission system and you have an antifouler trick or to some effect to throw off the O2 sensor then you'll be good. If they do a sniffer, then more than likely you wont pass.

i installed the dc sports header with the help of my buddy and some air tools in about half hour-45 mins,really easy install and i was not expecting to have a raspy sound. the car sounds nice when it idles but when i step on the gas you can hear it.before with just my intake and exhaust my car sounded really good. now the scion sounds like a ricer!!!! I was told a resonator would solve the problem, wondering if anyone has had the same problem and does anyone know how to reset the check engine light the easiest way its really ____ing me off as well.

as far as everybody disconnecting the negative battery cable, you dont have to do that.

opening your fuse box and removing the ECU fuse does the same exact thing, without resetting your windows and all that stuff. you also dont need any tools to do this, except for the HANDY DANDY FUSE PULLER stuck to the top of the fuse box lid.

Damn those bolts on the exhaust bracket was hard to get out. Very stiff.

i just did my install & i have all the part to make the CEL not come on... also i installed the DC 4 int 1 & when i went 50miles my CEL came on :( WTF

so i think my next step will be to pull the (-) off & let the car sit for 10-20 mins then put the (-) back on & start the car.... Then i will let the tC idel for about 10-30 mins maybe this will fix the issues i am having... maybe the EUC needs to re map the new air flow going into the header & let it ideal might be the only way ;)

ill kep you all posted but for now chck out my install info

http://www.scikotics.com/forums/showthread.php?t=22972

if your using the antifouler mod thats probably where your problem is. It doesnt always work for everyone.

yeah that could be the case also if i screw the o2 into the header it dose the same CEL after 25miles :(

Um... the o2 is suppose to be in the header at all times. You put the antifouler trick on the rear o2 sensor on the s-pipe.

yes i know the o2 is on the false & still i got a CEL after a few miles WTF ? :(

On the false? I assume antifouler. The antifouler mod is hit or miss, there is only one thing that I've found that has worked and I owned it and in 6+K miles never had a CEL http://www.scionlife.com/forums/viewtopic.php?t=175210&highlight= Dunno if he still makes them.

On the false? I assume antifouler. The antifouler mod is hit or miss, there is only one thing that I've found that has worked and I owned it and in 6+K miles never had a CEL http://www.scionlife.com/forums/viewtopic.php?t=175210&highlight= Dunno if he still makes them.

thx i sent them a PM so i hope they still make this i would love to lose that CEL i do nto have the spipe on the tC only the DC header

thnx

man it took me like 2 and a half hrs to get the damn sensor off. then i didnt have the rite drill bit so i had to go get that. and i still dont know if the anti fouler is gna work. cuz i heard it either does r doesnt. sorry just needed to vent

Just did the anti fouler mod in anticipation of my Megan Header that I am putting on tomorrow. I used three antifoulers (2 of the bigger ones sandwiching the smaller one) Fits great, and this guide was super helpful! One edit for the guide: You can unplug the sensor, which makes it easier to screw in. Its easier because the wire won't get wound up when you screw it in. Now, hopefully it works... :pray: Thanks!

I PUT ONE ON MY AUTOMATIC TC HOW MUCH HORSEPOWER/TORQUE SHOULD I GET OUT OF IT?

guess it would free up about 4 to 5 hp.

the antifouler works great on my dc header. I also have invidia s pipe.

Instigator....did you use the brackets with your AW header....if not, does this post any future problems such as cracking because of constant moving......have you ever thought of using a flex joint??? or a damper? i guess?....
Im not using the brackets but I am running an engine damper which should keep any cracking from happening. One of my co-workers is a master welder so I can have him fix anything that may happen down the road.
bbsciontc...did you use the brackets in the AW header?.....will cracking occur if we don't?

I have the AW header and noticed that only one of the stock header brackets will fit on the AW. Is it ok just to have it installed on one side (probably better than not having any brackets at all)?
I also want to know what the torque spec is for the header bracket BOLT which goes into the engine?
Thanks

Does anyone know best Header for '07, auto, with TRD CAI & Catback? 1-5, (1 being quiet-5 being LOUD)? I work nights so that's another concern. I don't care about other people but I do care for my retirees neigbors. They offered me cup of coffee one Sunday morning when I was changing my spare tire and of course they kept me company LOL

Has anyone ever had serious problems with Emissions? I think Wisconsin's first time Emissions on new car they check fuel cap pressure, that's it.

I have car handy cousin who wants to do installation. Everytime I see him "When do I get to install the header?"

will this anit fouler work on the strup header? its for a friends and is the step by step the same too?

bump bump

great instructions. :]

so the Anti-Foul goes on the s pipe not the header??

Correct anti fouler goes onthe spipe.........if you put it onthe header you will end up gettign improper air/fuel readings and the car willnot run long before going boom.

will this install work with the mmw header?

This setup should work on any header setup. Me and my friends have this setup and we have strup, dme, alphawerks, mmw's, etc, and no CEL.

What are some good ways to condition for sports? I'm in the tenth grade, and I've never played sports for school, but this year, I'm going to do track in the spring. I can't run as fast as I used to, but I want to build up my speed, so I can be as fast as I used to be. I know that schools do conditioning about a month before the sport starts, but I would like to start now. So does anyone who's done track have any suggestions for conditioning?
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wtf??

Dude are you high? WTH are you talking about!? Epic fail

Back on topic, how do the sensors unplug? I've switched to header and back, antifoulers to stock, and so forth a few times figuring out what works for me, yet I've never unplugged the sensors. Is it a straight out pull or do you insert a screwdriver into the slot? My wires are all twisted from the last install.

bump

good writeup, had a lot of trouble with the last bolt by the alternator. but i took off all the other bolts and just sorta kept moving the header, eventually it loosened up the bolt and i was able to take it off even though it was rounded

for those who has a hard time with the 02 sensor all you have two do is unplug if for the socket on the side of the engine so this was you can pull out the whole header then take a big wrench with the circle side with some wd-40 and a hammerand tap it a few times couterclick wise and ill come loose and come out....im seeiing people braking there backs doing it iwhile the its attached to the car..unplug it take the whole thing out bring it some where..where you have room to space to wrok with take a few mins thats it...or just unlung it then work with it on the car

Yeah, O2 sensor is easy unplug. A nice, ridged tab for you to press on while you pull out. Denso is good at that. That bolt by the alternator is a chore but doable.

does anyone know exactly what the o2 sensor is sensing and exactly how it works? i hear a lot of people talking about flow speed and amount of exaust, ect. i have also read that its supposed to sense a constantly changing mixture from lean to rich, 0.2 volts - 0.7/8 volts. ive read about simulators that simulate the same wave pattern (0.2 - 0.7v) for the ECU that the sensor is supposed to detect. does anyone know exactly how the sensor works? btw i have DC headers and anti foul for the past 6 months, ive reset my ECU about 50 times, and the CEL always comes on from 20-300 miles later, at random. i recently bought a simulator and that doesnt work either. ive covered my hole in the exhaust and mounted my sensor outside in the air, and removed my sensor completely. nothing works. my ecu is psychic. it knows... lol

Did you drill through both antifoulers or just one?

It's a regular ol' downstream O2 sensor, so no surprises there.

just the second one. i bought some more anti foulers im gonna try putting 3 instead of two. i bought the short ones not the long tapered ones.

oh and has anyone tried moving the sensor to after the second cat? wondering if this works, i might just do that. also thinking of removing the second cat tho in the future... so that's a last resort.

nevermind. i figured out smething that works. i put three anti foulers together, drilled through the last two of them. i bought a catalytic converter on ebay for $50, and knocked out some of the honeycomb inside and placed it inside of the anti foulers, before the sensor. it seems to be working well... so far. if anyone else is still having the CEL problem with their sensor, maby try this.

20lbs torque on the header seems low - can someone confirm its 20lbs? I need to remove my header tomorrow. Also - i bought some blue lock nut. Should you or should you not use that on a header?

^ nevermind - its 27lbs
http://www.scionlife.com/tech/manual/?manual=tc05_1480

If anything use anti-seize on the nuts/bolts for mounting the header and O2 sensor. Locktite (or whatever you're using to secure the threads) won't be necessary as long as you torque to spec.

one of the spring bolts is stripped - anybody know the correct bolt to replace it with?

Could take it down to your local hardware store and hunt and peck for it. It's metric, but that's about all the help I can get you. I paid dealership price the last time I replaced one, and it was something like $4 so well worth some poking around in the bolt bins.

I have a corolla xrs 2009 i install dc sports 4-2-1 with three anti-foulers, 200 miles no cel yet,!!! thanks

any bolts or springs can easily be bought at lowes or hardware store..the header itself is metric....

Hi=D
quick question hope you guys can help. So how many non-foulers do I get? And what exactly do I do? Sorry for a noob question. Thanks

To correct your earlier post, the car throws a DTC from the O2 cuz the stock manifold has a built in cat. So the exhaust gas isnt being filtered properly so your emissions are ECU acceptable. By off setting the O2 sensor it causes less of the gas to hit it so it doesnt throw a code...

Any other questions id be happy to respond

when doing this should i replace the donut gasket as well? or will the original work just fine?

Most every thread I've seen about it has been reusing the existing donut.

ok just figured i'd double-check since i know my buddy recomended getting a new manifold gasket; so figured i'd double-check on this one as well since i hadnt heard of any issues

installed my DC header, misplaced my antifouler but I haven't got a CEL in over 100 miles. Am I supposed to reset the ecu?

after almost 3 years with dc header. The cel light came on. I found out the anti-fouler was broken off (due to rust). The o2 sensor was hanging by the wires. Every bolts and nuts under my car were very rusted.
I broke my spring bolt that connect the spipe to the header. I am going to dremel the other spring bolt off. :(
Does trdsparks sell those spring bolts?

"one of the spring bolts is stripped - anybody know the correct bolt to replace it with? "any bolts from hardware or auto stores should do heres a website with some you can order and almost anything else stock as well just type in scion tc http://www.rockauto.com/catalog/raframecatalog.php


"Hi=D
quick question hope you guys can help. So how many non-foulers do I get? And what exactly do I do? Sorry for a noob question. Thanks"you could order the angled one from several websites im not sure which ones (common item) or if you happen to have an old catalytic converter, buy three antifoulers the right size at autozone (correct size mentioned earlier in thread somewhere) and drill two of them out 1/2 inch then put them all together put some pieces of the honeycomb cat in it then screw in your o2 sensor.

"ok just figured i'd double-check since i know my buddy recomended getting a new manifold gasket; so figured i'd double-check on this one as well since i hadnt heard of any issues"i presume your getting some new headers? if so then you could get a new gasket, although if you dont mess wit the old one you may be able to reuse it. i just felt safer to get a new one when i got my header.


"installed my DC header, misplaced my antifouler but I haven't got a CEL in over 100 miles. Am I supposed to reset the ecu? "you are supposed to reset your ecu after install then start it and let it idle for about 5-10 mins then your gtg. if you get cel do the anti fouler.


"after almost 3 years with dc header. The cel light came on. I found out the anti-fouler was broken off (due to rust). The o2 sensor was hanging by the wires. Every bolts and nuts under my car were very rusted.
I broke my spring bolt that connect the spipe to the header. I am going to dremel the other spring bolt off. :(
Does trdsparks sell those spring bolts?"wow thats a lot of rust lol you can get spring bolts from http://www.rockauto.com/catalog/raframecatalog.php for sure idk if trdsparks has them or not.

so if ur installing a New S-pipe do u still use the springs to blot it on to the headers?

yes, you will use the stock spring bolts connect new s pipe to the header.

alright help me out!

just recently, a friend of mine installed antifoulers to take off the CEL (i have a DC header). after the install we left the battery disconnected for about 10 minutes.

precisely after 37.5 miles the CEL came back on. it stayed on for about a week

some people said to just reset the ecu and leave the battery disconnected for a longer period. i left if off for 20 minutes and the CEL disappeared for a day...

then just this last weekend, it turned off.... it was off for about 2 days then turned again just this morning.

i hate how it gets my hopes n spirits up cuz theres not CEL, then it shuts me back down -__- haha.

any help would be greatly appreciated! thanks guys! :D

http://www.scionlife.com/tech/images/header_install_tc/31.jpg
did u have that same antifouler as in the picture? I have over 40k miles without cel.

how many antifoulers did you put?

gammatnt, yes sir the antifoulers are exactly the way yours are pictured

laminate, i have 2. i bought them from autozone

i did a bit of research, supposedly i'm supposed angle the sensor? or maybe i need a 3rd antifoul? i heard the need of the 3rd antifoul is usually for megan headers tho, i have a DC 4-2-1

try three. if that still doesnt work then either buy the angled one from somewhere prolly online. or get a hold of a cheap catalytic converter and bust out a piece of the inside. then put it in the antifoulers u have, right in front of the sensor.

fosho.... kinna holdin those solutions to last resort tho. just seein if anyone else has had a problem of the CEL turnin on and off

thanks so far for the feedback tho! any more input would be awesome :]

mine did kinda the same thing for a while.. i have DC headers and with 2 antifoulers it never completely worked. only for a few days here and there, sometimes a few weeks, but never working for good. i eventually put 3 antifoulers and drilled holes in the last two. putting pieces from an extra catalytic converter in front the sensor as much as could fit (not much could fit). this has been working for at least a year now. no problems at all. hope you find a fix before u have to go out and buy a cat or an elbow shaped one.

Kaeon Im haveing the same problem.. did what u said to do but the cel keeps coming on

Kaeon Im haveing the same problem.. did what u said to do but the cel keeps coming on
weapon-r anti-fouler....had over a year, lots of driving (including 7 hour road trips) still no CEL

thanks for bumping this, just realized when I switched from DC back to oem I didnt include the donut at the bottom...hm...

http://www.scionlife.com/tech/images/header_install_tc/11.jpg
Im having serious problems getting the one his hammering at off. everythings in the way been trying for about an hour even had my roomate try for a little bit. i just cant seem to get it. is there a tool that would make this easier?

I don't know how to describe it but it is connects to the wrench but allows you to pivot in the middle to hook up to the bolt.

i know what your talking about. the problem is that ive only lived in raleigh for a couple of months and dont know many people i work alot so dont know anybody who could take me anywhere to get one. so i jsut finished hooking everythign back up. (had already got all bolts of header, both o2 sensors out, s pipe off) o well 2maro ill go home depot or something and try that. nothing like laying under your car at 2am in a ____ty neighborhood with a flashlight in your mouth.

i try that same method when i had my headers install but it didn't work, so i ended up buying the anti fouler, but good write up i follow this on installing the headers and it worked out greatly.

i installed my header like 2 or 3 years ago and i have CEL on. i was wondering will it pass smoke check if i just leave it like this without antifouler and with CEL on.

Hey guys, really loving this thread, really helpful. Im doing a buddies DC headers tomorrow after noon. Just a couple questions. Right now he has a K&N short ram, and a DC axle back. When I install the headers with out any aftermarket mid pipe or s pipe will there be any sound difference if there is only an axle back on the car???