I decided against wiring in a resistor in-line with my IAT sensor, only because I wanted to have a reasonably accurate IAT reading on my UltraGauge.
I have been giving a lot of thought, lately, to retrofitting an EGR system to my truck's engine, since it currently does not have one. It has a cylinder head that has the EGR hole drilled (I had to fabricate and install a block-off plate). I'd just have to get the plumbing, and probably drill a large hole in the intake manifold for the EGR pipe. After that, I'd have to program an Arduino or something to control the EGR valve.
Just remembered - the truck's IAT sensor is positioned after its intake heater. I may have to relocate its sensor, too.
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