its under the mani on the right. if you just pulled it off you may have broken it if you werent careful and you just made this a nightmare.... need to plastic weld it on or get a nipple installed..
Edit: or if you ment BOV nipple not sure what it is for tial
2008 Bsm E92 335i - FBO -E85--------Sold
2014 BSM 335i Msport - Stock