You've got more power earlier and for longer. You've got more torque earlier and for longer. What's not to like? They just gave you 24.7% more power for minimal outlay of money. Not sure why you are so disappointed with the new results, it should feel fantastic in comparision to what it was
When my 02 STI was tuned it went from a max of 260hp to 276hp (it already had the exhaust on before hand = biggest gains over stock) BUT it was a completely different animal when I got it back due to more power/torque earlier and for longer. Just my 2c