I don’t think it has any noticeable advantages; on the contrary, it only has disadvantages compared to the ST.
The only good thing it has is the transmission, which is a 10R80 and can handle much more than ours, but aside from that:
Explorer ST
- Curb weight: 4,701 lbs
- Differential: 3.58 (More Torque, Faster Off The Line, Lower Top Speed)
Explorer PIU
- Curb weight: 5,438–5,558 lbs
- Differential: 3.31 (Less Torque, Higher Top Speed)
This means that it’s something truly surprising. It could be due to the amount of time dedicated to this project, which, if I’m not mistaken, is around 20 days, looking into every detail to improve the tune.