As much as we love the new BMW M3 and the M4 newcomer, there is one thing that still makes a few enthusiasts bad mouth the models.

I am talking about the engine, or more particular, the sound it produces.

In many opinions the previous generation, with its naturally aspirated engine, just gave off a far more pleasing purr when you drove it. Of these, two particular special editions were kings of the hill: the GTS and CRT versions. While the GTS was more track oriented, the CRT put more value on luxury, and both were fierce beasts.

Aftermarket specialist G-Power got a hold of one of each, and now presented a worthy give off for the past era. Thanks to some G-Power magic and a nice ASA supercharger, both these vehicles now produce 650 Hp and 630 Nm of torque, number that propel the car to 100 km/h in just 4.1 seconds before topping at 323 km/h.