EGT question OBDII vs ISSPRO - Ford Powerstroke Diesel Forum
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post #1 of 1 Old 08-15-2013, 02:08 PM Thread Starter
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EGT question OBDII vs ISSPRO

This week I installed a triple gauge pillar and 3 gauges from ISSPRO. One is my pyrometer. I have been noticing something odd in my opinion and I wanted to ask all of you what you thought about it.

First off I do not know where the factory EGT probe on my truck is which is an 08 it looks like there is one right off of the EGR cooler pipe but don't know if thats where it is used.

I tapped my probe where the directions told me to which is right at cylinder 8 (which I was told runs the hottest). I also have an Edge CTS Insight that I have been previously been using to monitor my temps which is where the confusion begins.

If I am driving my truck and I get on it say 35-40% throttle the Edge Insight will show the EGTs get all the way up to 1100 about and looking over at my ISSPRO gauge it hasn't even broke 800. Now if I were to come to at stop light they both seem to read the same. If I am letting my truck cool down before shutting it off I notice that the Edge CTS will read 300 (which is where I almost always waited until) and my ISSPRO gauge will say 375.

With everything that I have done to my truck and a bunch of those products saying they will help lower EGTs I never noticed that but if my ISSPRO gauge is actually accurate then wow my truck runs almost too cool to me. Yes I know placement of the probe makes a difference but this much? One last question is, how far into my manifold should my probe be in? I have it about 1/4 inch or so away from bottoming out on the manifold. Thanks
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