E92 M3 CSL: 470/3.999 = 117 hp per liter

E46 M3 CSL: 360/3.246 = 111 hp per liter

E92 M3 weight = 1655 kg...minus around 100 kg is 1555 kg for M3 CSL

E46 M3 CSL weight = 1385 kg

E92 M3 CSL is around 170 kg heavier than E46 M3 CSL, but has 110 hp more....