It really is easy. Watch the vids and give it a shot. It's pretty dummy proof!
2007 SGM E90 335i
JB4 G4, Mr.5 Intake, VRSF 7" FMIC, ER Sport Oil Cooler, RB PCV Valve, Cyba Scoops and Quad Tips, 17x9 ET30 and 17x9.5 ET35 Concave Apex Arc 8