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EOT vs. ECT comparision question.
Allright to start this off, this is not the typical my deltas are xx degrees apart what do I do. Here's the background. I finally got around to getting the truck ('07 f250) paid off and am starting to modify it a little. After fighting with the EGR delete I have that done. So I moved on to installing the dreaded GlowShift gauges (I'm cheap so I got them, don't flame!). I went with a 3 in 1 for boost EGT and fuel pressure. I have two max tow gauges for ECT and EOT.
Well I got all the wiring done, and have the temperature sensors located. The ECT is in the block and the EOT is in the billet oil filter cap. I know the proper test procedures for checking delta's, I was not able to do it though last night due to weather and roads. But after driving for 0.5 -0.75 hrs the ECT was reading 170-180 on the Gauge and ~190 by AutoEngenuity. EOT on the other hand was ~ 185-190 by AutoEngenuity and 150-160 on the Gauge. I think the AutoEngenuity Readings and Gauge readings should be closer. I have been trying to trace flows by the diagrams in 6.0 bible to make sense of this but can't in my mind.
I initially thought the EOT gauge was messed up so when I got back to the garage, I took the temp of the cap with an infrared thermometer and it read exactly what the gauge was at the time.
I am kind of at loss here of what was going, can't find much by google other than the EOT in a billet cap is a good way to do it, and am going cross eyed tracing blue, red, yellow and orange lines in the bible. Any input or help from you good folks would be appreciated.
Also it was pretty close to 0F last night when I was doing this, so I am thinking this may have been a factor but I am not sure. Sorry for the long read and thanks in advance.