I know u said u do the limit or lower, but I have an e fan, it did only give me one mpg increase, but recently I installed a vac gauge in my yruck, and I try to keep the vac around 20 while driving, also I use the cruise whenecer possible and keep the ac off, I get 19.7 mpg now, next up is a newfuel filter, and changing major fluids, but also if you check the alignment and get it straightend outthat will help a little, because then u wont be dragging the tires across the pavement

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Niche 17x8 rims, turn signal mod, painted side mirror ohc, full length explorer console, eatc, auto dim mirror, kicker components, sido exhaust, painted headlight, nightshaded tails,
Can you do the three pedal two step? I know iim can...