I have a Mazda 6 150 HP and I installed the 1.08 tune 2 weeks ago.
Much faster acceleration, and very smooth acceleration throughout the revs.
No power dropouts at all.
About the same fuel economy as before, as soon as I learned to control the throttle It is very easy to increase the fuel economy when having fun.
I live in Denmark, so from september until may the outside temperatures are below 20ºC.