If you're really getting 22 MPG, you're getting about as good mileage as any 6.2.
If anthing, if you totally unhook the EGR system, you might get a slight improvement - but NOT just by unhooking the hose from the EGR valve in the intake. There is an EPR valve (exhaust pressure regulator) that controls a shutter valve in the driver's side exhaust manifold. It restricts the exhaust on that side to divert it up to the EGR in the intake. If all you do is unhook the EGR on top, you still have that shutter retricting the exhaust. Unhook the line to it and tie it open with a piece of wire.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
... [Read Article]
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