Sprint Booster...is like describing colors...try it and you might like it.
It is just a remapping...and the gas pedal has a HUGE (psychological) impact on how people judge the potential power of a car (there are books filled with Marketing stories about car manufacturers only switching gas pedals to get a better overall customer rating...yes, they are trixie, lol)
I tell you what...it FEELS like more HP most of the time, BUT if you are REDLINING, it might FEEL as if you are missing a few HP up there.
As it has switchable settings, you can't go wrong. Once you drove in a more responsive setting, I can assure you, you won't go back anymore, as it feels like driving with the handbrake on...you are waiting an "endless" second for the power to kick in
The word expensive is relativ...
