The German tuners over at Lumma Design are taking yet another stab on the BMW X6, this time, on the most powerful diesel model, the xDrive40d that is equipped with a twin-turbocharged 3.0-liter straight-six delivering 306-horses and 600Nm (442 lb-ft) of peak torque in factory tune.

After Lumma Design?s people get their way with the diesel unit by updating the software and adding a custom exhaust system, output is increased to a more hearty 340-horses and 670Nm (494 lb-ft).

Source: Carscoop