The all-new 2010 BMW Z4 is still on its way to most showrooms around the globe but the team at tuners G-Power have already got busy on one. The Z4 has been in their workshop for some time now and has managed to develop several new upgrades for the car. When it comes to extreme performance mods for Beemers, G-Power is one of the best and already has a number of top-speed records under its belt.

Since the Z4 tuning program is just kicking off, G-Power’s new upgrades may be considered quite mild when compared to its previous creations. Nevertheless, there are still some interesting enhancements available for the stylish Z4 Roadster.

For starters is a new ‘Bi-Tronik’ ECU upgrade for the range-topping sDrive35i model. This pushes power of the car’s 3.0L twin-turbocharged six from 306hp (228kW) to 345hp (257kW) and torque from 295lb-ft (400Nm) to 354lb-ft (480Nm). To improve the sound emanating from the car G-Power also offers its ‘Deeptone’ stainless steel muffler.

This is backed up by a set of 20-inch alloy wheels and a fully-adjustable coil-over suspension kit with nine different settings. Naturally the Z4′s performance figures benefit from the improved output figures. Accelerating from stand still to 100km/h now takes just 4.7 seconds.

Gallery