I went through 5-star and gotexhaust.com for my tune and parts. Hard to say about exact numbers from the upgrades (400+ hp, 5000 lb vehicles)
But I love the added overall feel with the shift points in the transmission, both on hard acceleration and gradual slow to stop lights with the engine braking. The juice on the freeway feels much smoother. I feel as agile and maneuverable moving through traffic (holiday drivers) similar to the other sports cars in my stable (wrx, S4, Taurus SHO).
It's. Bit pricey upgrade after spending on the truck itself but the truck feels and sounds like it should. You'll appreciate it more if you notice the difference from stock. I rarely go into manual mode with the upgrade.