The F70 M135 xDrive—the range-topping variant with 300 horsepower—has now caught the attention of Swiss tuning specialist dAHLer Competition Line, which has developed a comprehensive upgrade package targeting both performance and aesthetics. Power and ExhaustThe centerpiece of dAHLer’s program is the Stage 1 power upgrade for the B48 2.0-liter turbocharged four-cylinder. The modification increases output from the factory 300 horsepower to 340 hp, while torque climbs from 400 Nm to 480 Nm. Both the power upgrade and exhaust are individually available or can be combined. Wheels and Visual UpgradesdAHLer’s in-house wheel lineup features prominently in the visual package.