its not about bhp, its about better performance, freeing up some of the rotating mass to make the engine more responsive, I dropped quite a few pounds from my flywheel when I ditched the DMF putting a solid lightweight wheel in the Punto, the car did feel more responsive particularly in lower gears unfortunately I matched it up with stock clutch and had issues so switched it back to stock for the moment, still using the car as a daily driver so didn't want to go the whole hog with paddle clutch, will likely get more serious tuning it when I have its replacement next year and will try again.