BMW Z4 1.8i 156 Hp remapped to 262 Hp & 427 Nm. Posted byStef + Monday May 15th, 2017Saturday May 13th, 2017 Downtuned 2.0i version We remapped this BMW Z4 1.8i 158 Hp & 260 Nm to 262 Hp & 427 Nm of torque.