The BMW 335I is one of the hottest cars to modify since its release in 2006. The earlier N54 twin turbo, the later N55 single turbo, and even the most recent F30 N55 has so much power potential. Our sister company, Agency Power, has been making 335I power parts for years and this customer in France is showing them off. Equipped with an Agency Power downpipe and modified catback exhaust, he takes to the dyno to show off his N54 power on his 2010 335I. Check out the video and pics and make sure to shop all BMW 335I Power Parts here.