German tuning company Dahler took a BMW M235i Convertible in their shop for a makeover. From a performance standpoint, the 3.0-liter inline-six Twinpower turbo has been tweaked to deliver 390 hp, a significant increase over the standard 326 horsepower and likely more than the upcoming BMW M2 – rumored to output 365 horsepower.

The power increase was achieved using a new ECU map as well as a stainless steel sport exhaust and a new intake.

The M235i Convertible by Dahler can now accelerate to 62 mph (100 km/h) in a mere 4.2 seconds while reaching a top speed of 179 mph (288 km/h). In comparison, the M4 Convertible is rated at 4.1 seconds.

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To improve the ride quality and dynamics, the M235i Convertible also received a new suspension system along with a set of custom wheels in 18 inches.

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