I still have these xi downpipes for sale if anyone wants them... I'll take $600 shipped in the 48 states!
Application : 335xi N54... new $927.95
2009 Z4 35i 6mt, Spec 3+ clutch, Mfactory SMFW, MHD 100% E85 Wedge tune, Fuel-it TBI w/Bluetooth ethanol sensor, AR downpipes, Custom turbo Inlets, MMP outlets, BT intercooler, Stett Chargepipe, Tial BOV, H&R coils, 19" 2-piece wheels, Potenza RE-11 tires 235 & 275/19's
Sold>2008 E92 335xi FBO+ ran firstname.lastname@example.org MPH