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I'm in the final phase of testing my EGR delete. My first full tank of fuel with EGR re-engaged compares to the last two tanks with EGR diabled (w/no CEL).
w/ EGR 40.5, 42.2
no EGR 42.4, 43.1
w/ EGR 42.6
Weather and driving conditions have been varied, so I am testing over multiple tanks to hopefully average out the variation.
At this point it looks like EGR on the ALH TDI doesn't seem to impact fuel mileage much at all. Perhaps because the intake is not throttled like other turbo diesel EGR systems like my Jeep Liberty CRD, which did respond well to EGR delete.
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I'm not coasting, I'm shifting slowly.
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