One of the best mappers in the game is paulThat torque curve on that looks very "boosty"
For comparison here's a graph of my mates mapped M235i
View attachment 22604
Red is the stock map, and green the remap. IIRC the mods on his car at the time were an upgraded charge pipe, k&n filter, VSRF sports car, and resonator delete. The torque curve is pretty much identical to the stock map, just more everywhere.
Since then he's added a Pure 500 turbo, VSRF intercooler, and a stock B58 hpfp and had the map redone resulting in some great gains:
View attachment 22606
Again, it's retained a close to stock torque curve which makes it much nicer to drive compared to having lag followed by a big surge of boost/torque