Quote:
Originally Posted by Big Dave
It varies from engine to engine.
Doesn't seem to help VW TDI engines.
It helps Ford 6.0 and 6.4 engines a lot as it does the Cummins 24 valve.
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Big Dave, If I am reading this correctly, EGR HELPS with mpg in some diesels but hurts the VW TDI? Can you add links to your sources please? Some folks claim EGR hurts mileage, some say no difference, and some say it helps diesel mpg.