BMW’s N54 series straight-six engine is one of the most coveted powerplants currently in production, picking up prestigious awards like the International Engine of the Year title and appearing in some of our favorite cars like the 335i Coupe and Sedan. In its standard form, the twin-turbocharged mill already delivers a generous 306hp (225kW) and 295lb-ft (400Nm) of torque but for those individuals unsatisfied by this output BMW is now offering a new power upgrade.

Falling under the guise of a new ‘Performance Power Kit’ range, the upgrade for the 3.0L N54 adds an additional 20hp (15kW) and 37lb-ft (50Nm) of torque. This results in faster acceleration and increased flexibility for drivers of the 135i Coupe and Convertible, and 335i Sedan, Coupe, and Convertible (including models with the seven-speed dual clutch transmission).

The standard N54 engine generates 306hp (225kW)

The standard N54 engine generates 306hp (225kW)

Just how much faster do the modified cars go? The 335i Sedan, for example, will accelerate from a standstill to 100km/h in 5.4 seconds with the kit installed – 0.2 seconds faster than the standard model. Keep going, and acceleration from 80–120km/h improves by 0.5 seconds.

The kit is made up of software and hardware components designed specifically for these models but the range will soon be expanded for other BMW vehicles that also use the N54 engine. Other modifications include a second radiator, a new intake, and an uprated cooling fan.

Expect pricing and availability details to be revealed closer to the kit’s launch scheduled for the third quarter of the year. To see what other upgrades are available for the 1 and 3-series check out our previous story for details on the full range of BMW Performance Parts.