Never heard of Nowack Motors? Don’t worry, you are not the only one! But with a 715 hp tuning program for the new BMW X6 M, we had to write about it! And to obtain that incredible output the tuner modified the turbochargers, added high performance exhaust manifolds, installed motorsport catalytic converters, and reprogrammed the ECU module. The result? 715 hp and a peak torque of 845 Nm.