G-Power BMW M4 CS launched with 592bhp from new upgrade package

German tuning company G-Power has applied its hand to the BMW M4 CS

G-Power has released details of a new upgrade package available for the BMW M4 CS. Building on the standard S55B30 straight-six engine, G-Power is quoting a power figure of 592bhp through a variety of upgrades.

Representing a significant 140bhp power increase over the standard M4 CS, the major source of the power gain is generated from a bespoke ECU software package, unlocking the engine’s potential without compromising on reliability or driveability.

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In addition to the revised ECU, G-Power has also replaced the turbo’s compressor wheel with a new CNC-milled unit, developed in-house by G-Power’s engineers. Combined with a new turbo housing, the new pulley wheel’s lower weight will also reduce rotational inertia inside the turbocharger, improving throttle response despite the higher boost being produced.

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Performance times are quoted at 3.7 seconds for the 0-62mph sprint, topping out at close to 200mph thanks to the removal of BMW’s top-speed limiter.

G-Power has also fitted a titanium exhaust system tipped with four 90mm carbonfibre finishers. Bespoke coilover suspension and new 20- and 21-inch wheels have also been fitted.

For those not familiar with the company, G-Power is a German tuning company formed in the early 1970s specialising in BMWs. By 1976, G-Power had developed its first tuning kits for various BMW models, consisting of uprated carburettors, cams and headers. By the 1980s, G-Power had moved on to manufacturing plastic bodywork for the BMW 2002, and now specialises in upgrade packs for most of BMW’s sports car range.

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