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.

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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