Check your intake elbow, between the air box and the mass air sensor. My car did the same thing and after checking the hoses i noticed a crack in that elbow. I didn't really think anything of it but it has since turned into a gigantic hole. It's now covered with plastic wrap and electrical tape until my samco sport hose kit comes in the mail. It has a silicone intake elbow that i think everyone should buy, much better than the crappy foam rubber elbow that BMW supplied us with. |