Unleaded vs. Premium gas, does it make a differnce?

Only place I notice any difference in the MH with running premium fuel os the pocketbook. Don't think the 1999 computer is smart enough to adjust the timing. In the 2106 Edge Ecoboost, however, there is a marked difference between running on 87 and 93 octane. On 93 I can four wheel drift my favorite corner on my favorite Alabama backroad. With 87 octane it just won't break the 4 Pirellis loose no matter what I try. According to Ford, I am getting about 30 or so more horsepower with the premium fuel which is just enough to make the corner really fun. And yes, I do keep it in my lane. I raced SCCA in my younger days so I can keep my vehicle in its own lane.