German tuner Kaege will probably make your day. The tuner has developed a comprehensive upgrade package for the BMW M3 Sedan (F80), and nothing can be better than a tuned-up BMW. The 3.0-liter inline-six turbo engine has been equipped with a plug & play software solution created by Kaege (€2,799), which bumped the output to 517 HP (380 kW) and 700 Nm (516 lb-ft) of torque.
For an extra €1,999, customers may enjoy the tuner is also offering a KW variant 3 coilover suspension, while more expensive solutions from KW are also available. Furthermore, you can even opt out for the custom 20-inch BBS alloys wrapped around in 255/30R20 or 285/30R20 Michelin Pilot Super Sport tires (€2,949).
The only modification inside the cabin is the carbon fiber paneling for the backrests (€1,499). I have to sday I was expecting more, but the good news is that all these modifications are also available for the BMW M4 Coupe (F82) and M4 Convertible (F83).