You forgot the cat-back exhaust.
Also, you might want to consider a walnut blast. It breathed a whole new life into my engine, and I only had 37k miles on it. I've never seen a before/after dyno, but I'd be surprised if it didn't produce a noticeable difference.
2008 135i Montego Blue sport pkg, premium pkg, Logic 7 sound, iDrive/Nav
Mods completed: JB4+ & FBO || LSD || BMW-P suspension + F/R sway bars || 18" Breyton GTS-R || M3 front bushings || Vogtland camber plates || BMW-P rotors + Stoptech pads |||| Acquired, not installed: BMS WW Meth kit || Logic HVI intake || Mishimoto OCC |||| Shopping for: Summer tires