Are there any advantages to deleting the EGR on the truck engines? Just seems like parts to leak and go bad when no other versions of the hemis have them...
When engines started having Variable Valve Timing this question became 10 times more complicated.
VVT can do a lot of exhaust recirculation on its own.
EGR valves fail a lot (i have replaced 3)
Cooled EGR systems can build up soot deposits until they malfunction.
If you are asking: I intend to not custom reprogram the engine computer but remove the factory EGR valve - that makes answering your question just a guess.
All I will post is that good experiments on the road would prove or disprove whether your fuel economy would improve if you just remove or disable the EGR valve. I am confident I could use my Oztrip computer (from Australia but no longer made) and the Fuel Economy Calculator program from Performance Trends to measure within 2% .
Doing a Type IV TMC/SAE fuel economy test with a minimum of 2 identical trucks also would settle the question.
