You bet that you will see an increase. The Turbo XS UTEC on an otherwise stock STI is worth about 30 WHP when running a base map. We are able to preload the STI UTEC with whatever map you need.
The device will work equally as well for the individual who is going to plug in and tune it every day, as it will for the person who sets it and forgets it.
There is more UTEC info here in a FAQ we created.. www.worldoneperformance.com/turboxs
We are also running a big sale on the STI UTECs right now, and we have them in stock and ready to go. Send an email to email@example.com
if you have any questions and we will give you a price that can not be matched.