German tuner G-Power has decided to share some of the technology found on the 800-horsepower M5 Hurricane RR and M6 Hurricane RR with the masses by offering a modified version of the supercharger system on the [previous generation] E85 BMW Z4 as well as the E46 Series with the 3.0-liter straight-six engine. On both models, the redesigned SK Plus supercharger system replaces the previous ASA TM3 supercharger.
The geometry of the compressor has been modified as has the housing, resulting in a more efficient build-up of boost in the middle rev-range. With a 0.3 bar pressure boost, the SK Plus kit increases output by 55 ponies, to 286 hp and 345 Nm (255 lb-ft). Thanks to the extra oomph, the tuned Z4 accelerates from standstill to 100 km/h (62 mph) in 5.4 seconds.
To be able to wring out every bit of performance delivered through force induction, the German tuner recommends customers to specify their cars with a 9-way adjustable coil-over sport suspension. 20-inch multi-spoke Silverstone Diamond alloys, wrapped around in 245/30 front and 285/25 rear Michelin tires, can be ordered, too. For a more ferocious roar, G-Power can provide a new, hand-built rear silencer, with matching tail pipes.
Granted, these changes don’t transform the Z4 SK Plus into a Hurricane killer, but the tuner charges only €2.500 (VAT excluded) for the performance upgrade, which as we mentioned previously, is also available for the E46 BMW 3 Series.
By Csaba Daradics