Now, I understand the focus on improving horsepower and performance, but would something like this also help in improving fuel economy considering no change in driving habits?
That’s difficult to determine. If you could control the pedal position identically minus a tad to reach the same speed at the same timing and using less throttle, hypothetically yes.
What normally happens is that people use the same throttle amount to reach that speed faster for a -0- net gain or add throttle and see a slight decrease .