kieefer
Well-Known Member
This thread is very interesting and I’m thankful we have you and Phil providing your experience and knowledge. The same goes for other factory engineers that I haven’t stumbled upon yet.Ranger's 2.3L is "de-tuned" to pass Ford's tougher durability requirements for truck engines. They are more stressful fatigue tests (due to expected duty cycles while towing/hauling... a truck spends much more time at peak torque or power vs. something like an RS.) Think climbing up to Eisenhower tunnel at 70mph with a 7500lb trailer.
If you tune your truck you're writing off Ford's durability assessment. Sure it'll make good power on the dyno under ideal conditions on a nice tank of 93, but don't expect them to foot the bill when something goes wrong otherwise.
I had a low speed stumble when new and that has been improved by the tranny TSB reset.
I can still vaguely feel a “lean spot” or stall around 1500rpm, it’s better but it’s not as smooth as I would like. MPG is consistent 21 in town.
At 7k miles now I usually mix or swap up using 87 with 93 octane and I can’t help but think that a tune would make a huge difference in smoothness and fuel delivery.
So, that has me thinking of a tune until I read this thread.
Cannot a tuner “clean up” the fuel mapping without risking reliability? Isn’t the reliability more dependent on the driver?
For someone not interested in 1/4 mile times but rather fuel mileage and smoothness what is the answer? What could be improved upon?
Without a CEL the dealer won’t touch.
Cheers
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