Hamann unveils its completely revamped BMW Z4 M coupe. The upgrades on reflashed ECU increased output to 385hp and custom exhaust system, multi-part wheels, and a body kit. Reprogramming the standard engine management system produces extra bhp (11 kW), torque rises by 20NM and the reprogramming also includes circumvention of the Vmax limit and, after being thus tweaked, the HAMANN Z4 M Coupé reaches 275 km/h. More pictures after the jump…

[via Techeblog]