I have used the SC 1715 on 3 on my past Expeditions and liked them, however catching up on all of the new technology seems to leave more that can be done. My last Expedition[99 5.4 lifted on 33,s] did benefit from a 1715 in the shift points and mpg]

Im looking for something for my 98. It will be lifted and have 35,s before long. I am running a single Flowmaster and no real plans to do much more. I am not necessarily looking for performance[although Ill take it] but more to adjust the trans shift points. I am pretty sure I have 3.73,s. It has the 4.6[117k miles]. Majority of use will be for DD purposes and very little towing. Even towing, nothing extreme. Im fairly open about any suggestions/options.

Thanks