Not that it really needed the extra 65 horses but the tuners wanted to make this great sports car more competitive against its more powerful brothers like the 911 GT3 and GT3 RS.
The stock Cayman GT4 is powered by a 3.8-liter flat-six engine good for 385 hp and a time to 60 mph in 4.1 seconds. However, this power wasn't enough when compared to the Porsche 911 models which are more powerful and also more expensive.
Fabspeed has managed to boost the power to 450 hp by adding race headers, Valvetronic exhaust, and Cobb Accessport kit.
You can watch and hear the result of their modifications in the video below. Enjoy.