G-Power used an ASA T1-12 supercharger to reach the new power levels, and also needed to upgrade the engine’s ECU and exhaust system. The exhaust upgrades consists of a set of racing-headers and high-flow catalytic converters.
Other modifications include a mild sports bodykit, 20in light alloy wheels, a stiffer suspension set-up and uprated brakes with eight-piston fixed calipers and 380mm discs.
The end result is a 0-100km/h (62mph) time of 4.9 seconds and 0-200km/h (124mph) time of 15.1 seconds. This makes the G-Power Z4 3.0i comparable in performance to BMW’s own Z4M. Pricing for the kit starts at €18,850 ($29,900).