Are there currently any headers available w/no CEL???

[DJ Hellfire]

I think I want to end up getting a set of headers soon, but I remember reading a while back that they stopped producing those headers that go on with no CEL. Are there any available now?

[ArunSenior04]

I have never heard of headers that dont produce a cel. Its very easy/cheap to fix a cel, so buy whatever headers you want.

[KeWLKaT]

Its not the header, it's the dumbass who can't do things the right way.

1st O2 sensor ---> cat ----> 2nd O2 sensor.

ITS SIMPLE

I have it that way for my turbo manifold... and guess what... No CELS!!!


:):):):):)

[DJ Hellfire]

Its not the header, it's the dumbass who can't do things the right way.


:):):):):)


Well yeah, that's what I meant, just shortened it. A while back, there was a company who offered headers that had the O2S holes in the correct locations for US XD's from the factory that needed no modding, but I read that they stopped producing them for some reason.

Anyway, so I guess an exhaust shop can make the holes where necessary?

[KeWLKaT]

Yep, and I believe you are referring to the hotshots header.

[bigkahuna2187]

cant you just fix it with an o2 sim?

[DJ Hellfire]

cant you just fix it with an o2 sim?


I don't know, but I still want my car to be able to easily pass state inspection (free in NJ), so I'd rather have the O2S's connected.

[ArunSenior04]

cant you just fix it with an o2 sim?

Yes you can.

I don't know, but I still want my car to be able to easily pass state inspection (free in NJ), so I'd rather have the O2S's connected.

If you have a header, you wont pass inspections. To do so, you would have to install a high flow cat between the sensors. Otherwise, you can fake the o2 sensor into believing the primary cat is working by: extending it to behind the 2nd cat, or installing an o2 mechanical sim.

[DJ Hellfire]

Yes you can.



To do so, you would have to install a high flow cat between the sensors.

That's what I plan on doing; ditching the pre-cat, and replacing the 2nd cat with a high flow. I'd just have the welder cut off the end of the header downpipe after the flexpipe and weld the high flow cat there.

[SilverElantra]

i cant find the o2 sims where can you get them at...ive done searches....pm me plz

[ArunSenior04]

This will work. Its the same one I have. I just got it installed recently. 200 miles and no cel so far.

http://cgi.ebay.com/ebaymotors/O2-Simulator-Scion-Civic-RSX-TSX-SS-WRX-EVO-Tiburon-JDM_W0QQitemZ260024392073QQihZ016QQcategoryZ42610Q QssPageNameZWDVWQQrdZ1QQcmdZViewItem

[DJ Hellfire]

This will work. Its the same one I have. I just got it installed recently. 200 miles and no cel so far.

http://cgi.ebay.com/ebaymotors/O2-Simulator-Scion-Civic-RSX-TSX-SS-WRX-EVO-Tiburon-JDM_W0QQitemZ260024392073QQihZ016QQcategoryZ42610Q QssPageNameZWDVWQQrdZ1QQcmdZViewItem


1. How does that thing affect gas mileage and performance? Because the O2S's determine the a/f ratio and **** like that. So does this thing constantly give a reading that optimizes the a/f mixture and performance?

2. I don't get how it hooks up either. It says connec the O2S to the sim and connect the sim to the header. Why not just put the O2S straight in the header?

3. Also, I want to get a decent header, not something that will be poor quality. So should I shell out the $499 for the Kspec header or just go with an ebay header? I also want proper and easy fitment as well.

4. And I assume 97-01 headers will fit 02-06?

[mtlelantra]

You can also make these mech. O2 sims with 2 spark plug antifoulers screwed together... you just need to drill out the hole in the outer one.

[Jonny666]

try doing some research before posting.
try this thread
http://www.elantraxd.com/forums/showthread.php?t=17914
It shows people who have headers and people that have / dont have cel's.
Also, there is a new thread every month or so with someone that has the O2 sim's that arent working.

[ArunSenior04]

1. How does that thing affect gas mileage and performance? Because the O2S's determine the a/f ratio and **** like that. So does this thing constantly give a reading that optimizes the a/f mixture and performance?

2. I don't get how it hooks up either. It says connec the O2S to the sim and connect the sim to the header. Why not just put the O2S straight in the header?

3. Also, I want to get a decent header, not something that will be poor quality. So should I shell out the $499 for the Kspec header or just go with an ebay header? I also want proper and easy fitment as well.

4. And I assume 97-01 headers will fit 02-06?

1. The first one reads a/f mixture. The 2nd one makes sure the primary cat is working.

2. The O2 sensor plugs into it, and the sim into the flex pipe. We are talking about the 2nd o2 sensor (on midpipe), not the first one (on header.)

3. You can pay $3XX for a Hotshot header. Its ceramically coated.

4. Yes, But I heard that XD2s have issues with headers using the stock flex pipe.

The o2 mech sim is universal. On several other forms (evo, probes, nt) they are a simple way to fix the cel.

[DJ Hellfire]

1. The 2nd one makes sure the primary cat is working.


2. Yes, But I heard that XD2s have issues with headers using the stock flex pipe.




1. Yeah, I wasn't worried about that one because I was assuming that a high flow cat may come with a hole for the O2S, but maybe not. I was more concerned about the first sensor. Thanks! But I was wonder how the sim affects gas mileage.

2. The ones I saw on ebay had the header with flexpipe. But they were OBX brand which makes me think of Civics for some reason and some other no-named ****.

Also, this install doesn't look right to me as far as the first O2S placement. It looks like it's only reading cylinders 2 & 3. Does that matter?
http://img.photobucket.com/albums/v484/SurferJ4/ElantraGT%20Pics/DSC01999.jpg


This looks more proper as it will read all 4 cylinders:
http://img48.imageshack.us/img48/268/p8010433bg3.jpg






Is this all you get with the Hotshot header? No flexpipe? http://hotshot.com/Hotshot_site0706/hsheaders7_06/hy3022.html
http://hotshot.com/images/hy3022%20copy.jpg

[ArunSenior04]

No flex pipe with the hot shot headers.

[Cypher]

1. Yeah, I wasn't worried about that one because I was assuming that a high flow cat may come with a hole for the O2S, but maybe not. I was more concerned about the first sensor. Thanks! But I was wonder how the sim affects gas mileage.


you don't seem to understand this. IT DOESN'T. the first o2 sensor reads the exhaust gases in order to determine teh correct amount of fuel to spray into each cylinder. the second sensor has no bearing on it thus the sim WILL NOT affect your mileage. end of story.

[DJ Hellfire]

you don't seem to understand this. IT DOESN'T. the first o2 sensor reads the exhaust gases in order to determine teh correct amount of fuel to spray into each cylinder. the second sensor has no bearing on it thus the sim WILL NOT affect your mileage. end of story.

Oh, OK. I misread where he said the sim goes to the mid-pipe and not on the header. So the point of the sim is to simulate readings as if a cat were installed? If so, that's what was confusing me. They call it an O2S simulator on the auction as if you are trying to simulate having an O2S in the absence of one. I get it now. So this sim is basically for guys running no second cat, correct?

[Cypher]

hope i didn't seem like an *** lol. just had to get it into ur head :tongue:

[DJ Hellfire]

No flex pipe with the hot shot headers.

Will it bolt right to the stock flexpipe?

hope i didn't seem like an *** lol. just had to get it into ur head :tongue:


Nah, man! No problem! I know how it is. We cool! http://www.hidplanet.com/forums/images/smiles/icon_pidu.gif

[ArunSenior04]

Yes it will bolt on to the stock flexpipe since you have a XD1.

[DJ Hellfire]

I think we have a winner then! Do exhaust shops have flexpipes that they can add in? Because when I go to put on the high flow cat, I don't want to cut my stock cat off the stock flexpipe and weld the high flow on. I want to keep all the stock piping in tact and just get a new flexpipe and cat fabbed in just incase I have inspection problems. You know?!

[SilverElantra]

do the hotshots bolt up to the xd2's ive never seen anything about them not??

[ArunSenior04]

I think that most aftermarket headers, wont bolt up to the stock XD2 flex pipe. And when it comes to inspections, you'll still pass with one cat. I know here in MD, if the car is 2000+, all they do is check to see if the o2 system is working. If there are no cels, its working fine=pass.

[Jonny666]

1. Yeah, I wasn't worried about that one because I was assuming that a high flow cat may come with a hole for the O2S, but maybe not. I was more concerned about the first sensor. Thanks! But I was wonder how the sim affects gas mileage.

2. The ones I saw on ebay had the header with flexpipe. But they were OBX brand which makes me think of Civics for some reason and some other no-named ****.

Also, this install doesn't look right to me as far as the first O2S placement. It looks like it's only reading cylinders 2 & 3. Does that matter?
http://img.photobucket.com/albums/v484/SurferJ4/ElantraGT%20Pics/DSC01999.jpg


This looks more proper as it will read all 4 cylinders:
http://img48.imageshack.us/img48/268/p8010433bg3.jpg






Is this all you get with the Hotshot header? No flexpipe? http://hotshot.com/Hotshot_site0706/hsheaders7_06/hy3022.html
http://hotshot.com/images/hy3022%20copy.jpg

No one answered your question about reading off 1 cyl.
You are correct it is an issue. if you think about it you've got 4 cylinders goin and the ecu only see's what is happening in one of them. that means if that particular cylinder is running a little rich, the ecu will trim out some fuel and run the other's lean. its just nice to give the ecu ALL the information. if im not mistaken that was toecutter's install. he has since relocated the primary O2 sensor a little further back to where it reads from all 4 cyls. the next question your going to have (before you even have it) is "wont moving the primary O2 sensor back cause a delay in the signal to the ecu (causing bad idle) or cause the O2 sensor to not get hot enough? and the answer is .... i've had mine behind the motor in the midpipe for about 1.5 yrs now and my Beta II still idles like butter and runs like a champ.

[DJ Hellfire]

1. No one answered your question about reading off 1 cyl.
You are correct it is an issue. if you think about it you've got 4 cylinders goin and the ecu only see's what is happening in one of them. that means if that particular cylinder is running a little rich, the ecu will trim out some fuel and run the other's lean. its just nice to give the ecu ALL the information. if im not mistaken that was toecutter's install. he has since relocated the primary O2 sensor a little further back to where it reads from all 4 cyls.

2. the next question your going to have (before you even have it) is "wont moving the primary O2 sensor back cause a delay in the signal to the ecu (causing bad idle) or cause the O2 sensor to not get hot enough? and the answer is .... i've had mine behind the motor in the midpipe for about 1.5 yrs now and my Beta II still idles like butter and runs like a champ.



1. That's EXACTLY what I thought.

2. Thanks! I didn't think it would cause an issue.