G-Power recently unveiled its full tuning program for the E90 BMW 3 Series. A new wheel is available, the Silverstone Diamond, along with a Highline aerodynamic kit. Made from carbon fiber reinforced plastic, the kit includes front and rear bumpers, side skirts, and a rear wing, plus a carbon fiber front lip and rear diffuser. Those hankering for wheelarch extensions might like the Extremo body kit instead. The company offers various ways to make thehallmark straight-six even more powerful and torquey, or gives customers the option of dropping in either a 470-bhp 5.0-liter V8 or a 550-bhp 5.0-liter V10. To cope with the increased power levels, G-Power also supplies sport braking systems with 15-inch rotors and six-piston calipers. And yet again we have another reason to be thankful for the Nrburgring, as that's where the company tested and tuned its various suspension components.