Just got my headers in....
Just got my headers in....
this is what i got out the box. the welding looks fine to me but what do i know.... can some1 tell me where the egr is??? and where are the o2 sensors? pardon my newbness...
what do you guys think of the header quality wise? comments are welcome....
what do you guys think of the header quality wise? comments are welcome....
Your EGR is usally where the Claw is ,
The o2 is the botton section near the end of the flange.
Where did you order them? are those obx or stone racing ?
btw , the welds look very clean , looks like tig welded... nice craftsmanship on them.
Flanges look nice and thick , even the chambers look very clean inside.
The o2 is the botton section near the end of the flange.
Where did you order them? are those obx or stone racing ?
btw , the welds look very clean , looks like tig welded... nice craftsmanship on them.
Flanges look nice and thick , even the chambers look very clean inside.
Yeah they look good!! I dont know to much about headers and Y-pipe. So I guess if you can teach me what you know, that would be awesome. Hell, I dont even know exactly what they do except make the car faster. lol
Well wherever you got those. Please hook me up so I can get them too. Also, when you install and get a few runs in can you inform how they are, noise, etc.?
But they look awesome!! What is a EGR?
Well wherever you got those. Please hook me up so I can get them too. Also, when you install and get a few runs in can you inform how they are, noise, etc.?
But they look awesome!! What is a EGR?
egr is not on my headers so according to tavarish, the CEL light will be on till i get a egr welded on there. im gettin them put in on friday and will hopefully have a video up here by friday night depending on how the install goes. Dyno comes last after i get my spacers put in also and apexi tune.
Joined: May 2005
Posts: 10,197
From: Displaced New Yorker in Southern, MD
Originally Posted by Look-at-my-MAX
they are NOT hostshot. for the price i paid i cant really lose. tavarish said it looks like itll fit fine. i just need to get a egr welded on it. everything will be done friday.
Originally Posted by Look-at-my-MAX
they are NOT hostshot. for the price i paid i cant really lose. tavarish said it looks like itll fit fine. i just need to get a egr welded on it. everything will be done friday.
What the heck is an EGR?
For Chernmax: So when you got your Hotshot headers, did the "EGR" and all spacers come with it? If seperately, do you think Cattman will do the same upon releasing his headers?
For Chernmax: So when you got your Hotshot headers, did the "EGR" and all spacers come with it? If seperately, do you think Cattman will do the same upon releasing his headers?
Joined: May 2005
Posts: 10,197
From: Displaced New Yorker in Southern, MD
Originally Posted by GrimMax
What the heck is an EGR?
For Chernmax: So when you got your Hotshot headers, did the "EGR" and all spacers come with it? If seperately, do you think Cattman will do the same upon releasing his headers?
For Chernmax: So when you got your Hotshot headers, did the "EGR" and all spacers come with it? If seperately, do you think Cattman will do the same upon releasing his headers?
What the heck is an EGR?
Originally Posted by FSM
EGR System Description
This system controls flow rate of EGR led from exhaust manifold to intake manifold. The opening of the EGR
by-pass passage in the EGR volume control valve changes to control the flow rate. A built-in step motor
moves the valve in steps corresponding to the ECM output pulses. The opening of the valve varies for optimum
engine control. The optimum value stored in the ECM is determined by considering various engine conditions.
The EGR volume control valve remains closed under the following conditions.
Engine stopped
Engine starting
Engine idling
Low engine coolant temperature
Excessively high engine coolant temperature
High engine speed
Wide open throttle
Low battery voltage
COMPONENT DESCRIPTION
EGR volume control valve
The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four winding
phases. It operates according to the output pulse signal of the ECM.
Two windings are turned ON and OFF in sequence. Each time an
ON pulse is issued, the valve opens or closes, changing the flow
rate. When no change in the flow rate is needed, the ECM does not
issue the pulse signal. A certain voltage signal is issued so that the
valve remains at that particular opening.
EGR Temperature Sensor
The EGR temperature sensor detects temperature changes in the
EGR passageway. When the EGR volume control valve opens, hot
exhaust gases flow, and the temperature in the passageway
changes. The EGR temperature sensor is a thermistor that modifies
a voltage signal sent from the ECM. This modified signal then
returns to the ECM as an input signal. As the temperature increases,
EGR temperature sensor resistance decreases.
This sensor is not directly used to control the engine system. It is used only for the on board diagnosis.
This system controls flow rate of EGR led from exhaust manifold to intake manifold. The opening of the EGR
by-pass passage in the EGR volume control valve changes to control the flow rate. A built-in step motor
moves the valve in steps corresponding to the ECM output pulses. The opening of the valve varies for optimum
engine control. The optimum value stored in the ECM is determined by considering various engine conditions.
The EGR volume control valve remains closed under the following conditions.
Engine stopped
Engine starting
Engine idling
Low engine coolant temperature
Excessively high engine coolant temperature
High engine speed
Wide open throttle
Low battery voltage
COMPONENT DESCRIPTION
EGR volume control valve
The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four winding
phases. It operates according to the output pulse signal of the ECM.
Two windings are turned ON and OFF in sequence. Each time an
ON pulse is issued, the valve opens or closes, changing the flow
rate. When no change in the flow rate is needed, the ECM does not
issue the pulse signal. A certain voltage signal is issued so that the
valve remains at that particular opening.
EGR Temperature Sensor
The EGR temperature sensor detects temperature changes in the
EGR passageway. When the EGR volume control valve opens, hot
exhaust gases flow, and the temperature in the passageway
changes. The EGR temperature sensor is a thermistor that modifies
a voltage signal sent from the ECM. This modified signal then
returns to the ECM as an input signal. As the temperature increases,
EGR temperature sensor resistance decreases.
This sensor is not directly used to control the engine system. It is used only for the on board diagnosis.
That port is where the EGR connects to FROM the intake manifold. See this pic (circled in red)
Here's a more real world picture you can relate to.
Notice Look At My Maxes' headers, they do not have this feature. The other smaller bungs that are seen here are for O2 sensors.
I was in the opposite boat with my headers, where they had the port but I did not need it (I have an 03 Maxima) So I had to plug it up. I'm sure the OP will have/think of a remedy. Might even get rid of it altogether.
^^^ That's correct.
An egr bung and location will be a bit more difficult than your typical o2 sensor bung relocation. The main reason why is because the metal egr guide tube. You will need the egr to be fitted almost perfectly to your header, allowing the egr tube to correctly attach without any MAJOR bends (the tube is maybe 3/4" thick?) or else it will clog and ultimately, defeating the purpose of the system. I bought a set of Hotshot's for my egr'd max, and managed to do the welding/fitting but it took trial and error! If you are planning on installing an egr bung, make sure you install it on bank 5 to be on the safe side (better to put bends in the guide tube than not reaching the egr bung at all) Good luck with the install.
An egr bung and location will be a bit more difficult than your typical o2 sensor bung relocation. The main reason why is because the metal egr guide tube. You will need the egr to be fitted almost perfectly to your header, allowing the egr tube to correctly attach without any MAJOR bends (the tube is maybe 3/4" thick?) or else it will clog and ultimately, defeating the purpose of the system. I bought a set of Hotshot's for my egr'd max, and managed to do the welding/fitting but it took trial and error! If you are planning on installing an egr bung, make sure you install it on bank 5 to be on the safe side (better to put bends in the guide tube than not reaching the egr bung at all) Good luck with the install.
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