I have a new Edge Insight, I found it interesting that my GPH is higher and the instant MPG is lower when I run the exhaust brake... My last tank was about 14MPG (Imp Gal.) around town, and I used the exhause brake all the time. This tank I'm not going to runt the brake and see if it picks up... anyone else notice any difference in mileage?

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2009 Ram 2500,QC, 6.7L, Auto-6, 4X4, Laramie
2006 Hummer H3, 3.5L, Adventure PKG
1986 GMC Sierra Classic, 5.7L