This video features a BMW M3 G80 equipped with a Valvetronic exhaust system and custom software tune. The upgrade is tested on the dyno to measure power gains and on the road to showcase sound and ...

I've decided to upgrade the stock horn on my bmw R1200GS to something a little louder. In this video, I show you how to connect a Denali Sound Bomb air-horn using the Hex EZCan accessory controller.