Do you have the stock air box on? I have DCI and I just removed the front cone and unclipped some of the piping to push it out of the way. You have to remove the fan as well.
Montego Blue E90 335i
7" VRSF IC | OFT Tune | DCI | RB PCV | Secondary CAT Delete & CYBA 3.75" Tips | M3 Front | CSL Trunk | 19" LC Dyna Wheels