Sashimi_Moto
Well-Known Member
My Ranger should arrive on Tuesday or Wednesday of this week and after I get some time behind the wheel, I will figure out if I want a tune. I have 2 Tunes on my Expedition (not 5-star) that I cycle between: 87 economy (winter) and 91 Heavy Tow (summer). The eco tune improved MPG by 2 on average and the 91 Tow feels like it adds 50HP/TQ and both greatly improved transmission mapping and shift pressures.
For my E450 C-Class motorhome that I tow my 7500lb enclosed trailer with I have a 5-Star tune: "87 Octane daily/tow". About 0.5MPG improvement (It's a motorhome, what do you expect?) but when towing it felt like the trailer I was pulling was half the weight and my Transmission temps where a lot more stable on long haul tows which I attribute to less shifting/slip. Very happy with 5 star.
For my E450 C-Class motorhome that I tow my 7500lb enclosed trailer with I have a 5-Star tune: "87 Octane daily/tow". About 0.5MPG improvement (It's a motorhome, what do you expect?) but when towing it felt like the trailer I was pulling was half the weight and my Transmission temps where a lot more stable on long haul tows which I attribute to less shifting/slip. Very happy with 5 star.
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