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View Full Version : Where should i put my oxigen sensor and my pyrometer?


Boricuanolgy
12-01-2006, 10:07 AM
Sup guys, Im building my down pipe for my turbo system and being that my car comes with oxigien sensor right in the exhaust manifold, where should I put it right now that im going turbo?
Can anyone of you guys provide this info? and if you guys have pictures even better.
Also can I put my pyrometer around the same area and what will be a good price for a pyrometer, I have seen a few for quite some money. I want to know this so the guy that is going to build my entire exhaust system knows what I want and how I want it.
Also while I'm at it, is the apex N1 muffler the best bet if I want a high performance muffler in stainless steel without the loud noise. also does anyone knows the piping size of this muffler? Any other mufflers you guys will recomend that matches my discription, stainless steel, at leat 2 1/2 diameter, and be able to comply with the Noise restrictions law, and last but not least, it got to look cool.
thank you guys. Can't wait to finish my baby.

lkailburn
12-01-2006, 10:36 AM
o2 sensor is good anywhere in the dp. should be MORE than 6" away from the turbo for heat reasons. also put it on the side of the dp. just don't mount it at 6oclock on a flat section of dp. condensation can wear down the life of the sensor.

pretty sure the egt probe should be mounted directly into the exhaust mani rather than the dp.

magnaflo mufflers are amazing. im running a 3" center in/out fully stainless. its very quite, not restrictive and has a similar to stock look which is what i wanted.

goodluck,
-Luke

unsivil_audio
12-01-2006, 12:27 PM
Yeah, egt definitely needs to be mounted pre-turbo to get a good accurate reading.

Boricuanolgy
12-01-2006, 06:36 PM
o2 sensor is good anywhere in the dp. should be MORE than 6" away from the turbo for heat reasons. also put it on the side of the dp. just don't mount it at 6oclock on a flat section of dp. condensation can wear down the life of the sensor.

pretty sure the egt probe should be mounted directly into the exhaust mani rather than the dp.

magnaflo mufflers are amazing. im running a 3" center in/out fully stainless. its very quite, not restrictive and has a similar to stock look which is what i wanted.

goodluck,
-Luke

Thanks a million Luke for the info, you think it would be possible for you, if you can, to show me some pictures of to where I should put my egt on the manifold. I just don't know where being that I got it, and it seems that I can't not put it anywhere in the manifold. about the magnaflow, is there a place I can find pictures of it. does it look sporty. I most admid, I don't like the loud sound but I do like the mufflers to look cool.

Boricuanolgy
12-01-2006, 06:38 PM
Yeah, egt definitely needs to be mounted pre-turbo to get a good accurate reading.
But where in the manifold should I put it. this is the part that Im comfuse. any pictures showing this parts guys, anyone please post them here so that I can see how it looks like.
thanks for the info man.
keep it coming guys.

quest4boost
12-01-2006, 06:55 PM
But where in the manifold should I put it. this is the part that Im comfuse. any pictures showing this parts guys, anyone please post them here so that I can see how it looks like.
thanks for the info man.
keep it coming guys.

i cant remember which site i read it from but it was off a egt probe manufactuer's site. anyways, they said to mount it on the manifold about 2" away from the exhaust port on the #3 runner. this is becuase #3 cylinder in hondas tend to run the hottest.

SOHC_Rules
12-01-2006, 07:18 PM
i cant remember which site i read it from but it was off a egt probe manufactuer's site. anyways, they said to mount it on the manifold about 2" away from the exhaust port on the #3 runner. this is becuase #3 cylinder in hondas tend to run the hottest.

this is true, because the way honda intake manifolds are designed, for one reason or another cylinder 3 runs a tad bit leaner, thus making it run hotter

the angled throttle body on edelbrock intake manifolds is said to fix this problem.

Boricuanolgy
12-01-2006, 07:38 PM
So all I have to do is find that site that shows where to put the egt probe. Thanks about the position being the #3 cylinder, this I didn't know. You mention the angled throttle body of the edelbrock intake? I happen to have a edelbrock intake manifold that Im gonna be using, so I dont have to worry about the #3 cylinde getting hot? Also Being that I have a cast iron manifold, would I have to drill the cast iron manifold in order to fit the egt? if the answer is yes, would the exhaust manifold crack?
Pleaseeeeeeeeeeeeeee keep it comming.

SOHC_Rules
12-01-2006, 07:43 PM
i honestly dont beleive the edelbrock manifold corrects the issue, but i havent used an aftermarket manifold... so...

and yes, you drill into the cast iron, tap the hole, thread the probe in.

Boricuanolgy
12-01-2006, 07:55 PM
Un Millon De Gracias!! I really apreciate the help guys, but keep it comming. If anyone has pictures of egt on their manifold please post them here. thank you guys.

überTUNED
12-02-2006, 01:18 AM
im sure someone said this but u want to take Pyro readings from b4 the turbo since comming out of the turbo is ganna b off, since the turbo is soo hot, u need to read b4 it tell the true A/F of the motor... for a WB02 i pull it from after the turbo since heat doesnt matter to an extent ona WB02, pyro is better for tuning if u know how because u can tell detonation just by looking at the guage...

Boricuanolgy
12-02-2006, 07:06 AM
im sure someone said this but u want to take Pyro readings from b4 the turbo since comming out of the turbo is ganna b off, since the turbo is soo hot, u need to read b4 it tell the true A/F of the motor... for a WB02 i pull it from after the turbo since heat doesnt matter to an extent ona WB02, pyro is better for tuning if u know how because u can tell detonation just by looking at the guage...

Thats the reason I want to put one, not just for look but for tunning/protection friends of mine that are runing good numbers sugested that I get one, it will make tunning more easy/safer.
thanks guys!
Jimmy

Hellhatch
12-02-2006, 09:10 AM
this is true, because the way honda intake manifolds are designed, for one reason or another cylinder 3 runs a tad bit leaner, thus making it run hotter.

I second this.

Boricuanolgy
12-02-2006, 11:41 AM
If anybody sees a picture of piry intall on a exhaust manifold please post the link here so that we, specially me can see it. thank you guys keep it comming.

TunerToys
12-07-2006, 07:34 PM
...they said to mount it on the manifold about 2" away from the exhaust port on the #3 runner. this is becuase #3 cylinder in hondas tend to run the hottest.

Solid Answer!

Craig

Boricuanolgy
12-18-2006, 06:41 PM
thank you guys, good looking out!!

BLK92_D16
12-19-2006, 11:56 AM
Exactly what the others stated to be true, is... This is the visual you're probably looking for. #3 about 2-3" from the block... No probe mounted, but you can see the mount for it... http://www.d-series.org/forums/vbpgimage.php?do=full&p=3295&d=1140881336

fjt
12-20-2006, 10:58 AM
O2 wideband sensor 6-8" away from the turbo(in the DP)

EGT sensor(Pyrometer) it is best to put it in the manifold, most ppl do it on the 3rd runner.

If you put the EGT sensor on the DP it will read around 200 F lower

cvic90
12-20-2006, 01:51 PM
I put mine in the #3 about 1.5"-2" from the head. I put it the bottom to hide it a little.