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Old 10-06-2016, 09:25 AM   #11
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Lots of discussion on the EGT location over on 4BTswaps.com by pretty knowledgeable folks. Some are installing it right on the turbo as I recall.
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Old 10-06-2016, 09:31 AM   #12
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ive seen all kinds of discussions too.. and trying t figure out whether I want to measure EGT before of after the turbo.. to me if im looking for cylinder temps id want to be closer to the engine than i would past the turbo...

on the DT its easy to put it in the manifold right before the turbo.. the turbo is pretty easy to take off so id remove it and install the sensor as to make sure all the shavings were out from drilling.. I have heard of using vacuum and oil andsuch to help keep drill shavings away from the turbo but im not sure I want to risk it..

going in the down-pipe of course is easy.. drill a hole, tack a bung on and screw in a sensor..

-Christopher
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Old 10-06-2016, 09:42 AM   #13
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One trick I recall from the aforementioned site to keep shavings and such out was...(believe it or not) ...drill it with the engine running. According to the source, it blows everything back out. But you have to get the hole nearly through before cranking it up or it's just too danged hot to work on. Same routine when tapping the threads.
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Old 10-06-2016, 09:53 AM   #14
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Whats the point of a sensor if it's not reading accurately? Most pyro's that I've seen installed have been in the manifold, before the turbo. I'm not sure what kind of data you'd be looking at 2ft after the turbo, but I have a feeling it's not as accurate of a reflection of cylinder temp that it would be if it were in the manifold.
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Old 10-06-2016, 11:29 AM   #15
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Originally Posted by cadillackid View Post

so on my DTA360 i should install the pyro in the down-pipe just past the V-band?
-Christopher
That works. It's more accurate to be in the manifold, right before the turbo. The pro to this is more accurate reading. Con is IF the probe breaks, no more turbo. Going down stream will just "read" a cooler temp than you actually are.
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Old 10-08-2016, 12:02 PM   #16
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That works. It's more accurate to be in the manifold, right before the turbo. The pro to this is more accurate reading. Con is IF the probe breaks, no more turbo. Going down stream will just "read" a cooler temp than you actually are.
Not just a cooler temp. Exhaust temp after the turbo will vary based off of turbo efficiency. Meaning you could get a false positive while the actual temp is in the danger zone.

I don't know if I've ever seen a probe that was installed properly break off and eat a turbo
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Old 10-08-2016, 12:55 PM   #17
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on an I6 its easy for placement.. what about a V-8 ? right near the turbo inlet?
-Christopher
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Old 10-08-2016, 04:06 PM   #18
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I have mine drilled right into the exhaust manifold.
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Old 10-08-2016, 04:13 PM   #19
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I have mine drilled right into the exhaust manifold.
on which side? or after the Y pipe?
-Christopher
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Old 10-08-2016, 06:36 PM   #20
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Passenger side-right before the flange for the uppipe.
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