Do you have the 4.7?
I have a quad cab 4x4 4.7 dakota myself
I have gotten 20+ straight up highway, but my average is just over 16.
I'm wondering how much a PITA the y-pipe was for you, and was it effective?
I just did a Y-pipe back exhaust of 2.5" and am hoping that it helps move that 5000 lbs around a bit easier.
Also, do you think you gained a good bit from the E-fan? which one did you use?
Stock dakota is 15 ave mpg, and I'm getting 16+ with my few mods. Hoping for more, but not getting it yet.
gl and gj!
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