So don't fit such a stupidly big turbo next time then. Mine starts working at about 2 - 2.5K.
That's exactly his point. Mine starts working at 2.5k as well, and below that it has all the pulling power of a 1.0 Litre Micra, at ~2.5k it's like a switch being flipped. Turbos don't have smooth torque characteristics.