We had the Open Flash tune on the shop's M4, the flat torque map is an interesting one.
Compared to the full TQ open flash map, the flat torque was sometimes faster (full torque has too many traction problems, but thats what +80 whp in the midrange gets you
)
The power delivery with FT is pretty nice
Im trying the Active Autowerke flash now and im very surprised with how the car keeps making power all the way to redline.
Im hoping to have it on the dyno soon to compare it to stock