ACTIVE AUTOWERKE F-CHASSIS X-DRIVE CHARGE PIPE X3 X4 335IX 435IXACTIVE AUTOWERKE BMW F CHASSIS N55 X DRIVE CHARGE PIPE 2012 BMW F3X X3, X4, 335ix, 435ix X Drive with N55 engine Active Autowerke is familiar with some of the issues that 2012 and newer N55 BMW X Drive X3, X4, 335ix, 435ix owners experience even running with the factory BMW boost. The BMW N55 utilizes an all plastic construction for the factory charge pipe. This charge pipe will eventually break, it is just a matter of time and when. Whenever the