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Whether or not EGR is beneficial depends on the cam profile. Sometimes they have enough "in-cylinder EGR" due to the cam that additional egr isn't beneficial. Other times, there is less of that effect, so it's beneficial (for either FE or emissions, or both) to add EGR.
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Call me crazy, but I actually try for mpg with this Jeep:
Typical driving: Back in Rochester for school, driving is 60 - 70% city
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