where to tap my EGT??

[Cheks_Talon_TSi]

Should I tap the PROBE (thermocouple) of my Autometer EGT over the exahust manifold (in front of cyl. #1, closer to the belts side)??? or should I tap it in the 02 housing???

Iam using a 2G exh. manifold and a 2g 02 housing. I read on the vfaq.com that it is recomended to tap the egt probe in the 02 housing where the o2 sensor used to be...

But which one is the best way??? on the runner #1 or on the 02 housing???

Thanks in advance

Sergio G.

 

[91mitsuman]

Tap in the exaust manifold toward the collector in cylinder 1's runner i have mine on the top not the side i figured warm air rises. But alot of people run theirs on the side by the power steering pump.

 

[Black94DSM]

Run the EGT Probe on the #1 runner, its the leanest runner of the 4. Put it about mid length in the runner.

 

[Cheks_Talon_TSi]

Ok, Thanks guys... I will tap it on top of the runner #1 (at mid lenght)

Just to be sure: Runner #1 is the one that is closer to the belts??? am i right??

Thanks in advance

Sergio G.

 

[Black94DSM]

Yeah your right.

 

[DGajre777]

There are many people on here that will say o2 tap because it is easier to replace a probe when it breaks apart instead of replacing a turbo and a probe. You might also want to look at TRE's probe available here - http://www.teamrip.com/accessories.html.

EDIT: I meant to say downpipe tap above, not o2 tap.

 

[Alucards_blood]

I just did my EGT last week, tapped it between #1 runner and the collector. Used a 1/8th NPT to tap the manifold, but that depends on what type of bung comes with your gauges. I have a threaded bung but my friend has a weld-on bung. If you read other posts, alot of people say tap the mani or tap the o2. I decided to tap the manifold and keep a close eye on my temp sensor probe and replace it often. Good luck with your install and get ready for lots of compliments!

 

[project_tsi]

Run it in the #2 runner if you can. Studies show that b/c of the design of the intake manifold and whatnot, cylinder 2 generally runs 50*-150* hotter, with cylinder 1 being 2nd hottest. I'm not sure why companies put the provision on the #1 runner.

I also run the TRE probe, easily the best probe on the market.

 

[flacopower]

There are many people on here that will say o2 tap because it is easier to replace a probe when it breaks apart instead of replacing a turbo and a probe. You might also want to look at TRE's probe available here - http://www.teamrip.com/accessories.html.

The o2 tap? The one in the o2 housing? I have never heard that before. I have always heard #1 cylinder because it runs the leanest. Please elaborate..

 

[DGajre777]

The o2 tap? The one in the o2 housing? I have never heard that before. I have always heard #1 cylinder because it runs the leanest. Please elaborate..

I meant to say downpipe, I don't know what the hell I was thinking. Downpipe because most autometer gauges don't go higher than 1600 deg F which can be reached on a exhaust manifold EGT. And as I said earlier, if a probe breaks and falls apart when it is installed on the runner, it will kill the turbo too.

 

[Cheks_Talon_TSi]

SO I have 3 optiones now

1.- Cyl #1
2.- Cyl #2
3.- On the Downpipe...

Option number 3, seems to be the most secure option but will it be accurate???

What about option #2??? have somoene else tapped his probe there??? will it be more accurate than on cyl #1???

let me know.

thanks

Sergio G.

 

[Shane2GSX]

Can someone elaborate on how high of a capacity EGT gauge would be suitable? I was planning on buying the autometer but if it temps are above 1600 normally on the manifold, that will be useless.

 

[DGajre777]

SO I have 3 optiones now

1.- Cyl #1
2.- Cyl #2
3.- On the Downpipe...

Option number 3, seems to be the most secure option but will it be accurate???

What about option #2??? have somoene else tapped his probe there??? will it be more accurate than on cyl #1???

let me know.

thanks

Sergio G.

Option 3 (downpipe) is secure and safe since it won't kill your turbo. Your temp with a downpipe install will be lower than a exhaust manifold install. You'll need to know what the normal EGT temp is for your car and then use it as a warning gauge. The accuracy depends on the probe. Get a TRE probe and you'll be fine as far as accuracy goes.

 

[DGajre777]

Can someone elaborate on how high of a capacity EGT gauge would be suitable? I was planning on buying the autometer but if it temps are above 1600 normally on the manifold, that will be useless.

They are not normally above 1600 F, but it CAN get up there. A warning gauge doesn't help if it is pegged at it's limit. For a manifold install, if you are getting autometer, I say 2000 deg F.

 

[91BlackLaser]

Is having the probe in the downtube a not so good thing then?

 

[boostedinaz]

People also have to think about other things that just placement. So 90% of the DSM community have it tapped to the #1 runner. So if you have your tapped to the DP or O2 how do you compare your numbers with those of others? You won;t be able to. Also I always see people mention that if it breaks it will take out your turbo. Well if people actually maintain there vehilce and check items and the scheduled intervals that shouldn't be a problem. I have also never heard of anyone that had to replace a turbo becasue the probe broke. Autometer know makes EGT gauges that go up to 2K and not just 1600 so I would, and actually will be, get one of those.

 

[Cheks_Talon_TSi]

Ok, so what I am going to do is to tap the autometer PROBE to the #1 cylinder, I think that's the better idea... almost everyone here have do it in that way...

Well, how often will I need to replace my PROBE??? just to avoid some problems with the turbo and so others...

Let me know

Sergio G.

 

[boostedinaz]

Ok, so what I am going to do is to tap the autometer PROBE to the #1 cylinder, I think that's the better idea... almost everyone here have do it in that way...

Well, how often will I need to replace my PROBE??? just to avoid some problems with the turbo and so others...

Let me know

Sergio G.

TRE says there probe is good for 45K, but I would replace mine at around 25-30k personally. It is only 45.00 so no big deal.

 

[DGajre777]

So if you have your tapped to the DP or O2 how do you compare your numbers with those of others? You won;t be able to. .

1350 deg F on a DP install.

Also I always see people mention that if it breaks it will take out your turbo. Well if people actually maintain there vehilce and check items and the scheduled intervals that shouldn't be a problem.

Good point!

 

[idt512]

45K miles for accuracy probably, but the concern is if it breaks off and kills the turbo, i have never personally seen or heard of probes snapping off but if they have been known to snap then id seriously consider installing on the downpipe

 

[boostedinaz]

1350 deg F on a DP install.

Is that high, low, normal and how far down the DP is the probe? How many people have it in the exact location you do? What do they see for a normal temp?

 

[DGajre777]

Is that high, low, normal and how far down the DP is the probe? How many people have it in the exact location you do? What do they see for a normal temp?

1350 is normal with the probe installed about 2 inches from the downpipe flange. I get what you are saying, but I don't want to risk having a probe break and fall off in a turbo. If other's want to, that's fine as long as they know the risks involved. I rather have someone say I knew about it instead of saying the probe killed my turbo and I didn't know it could fail.