SOLVED BMW Disa 2AAB Variable Intake System-Rough Idle, Stuttering Engine, Low Power, Ticking Sound 

Just wanted to make a quick video on a uncommon code the car will throw, that WILL NOT ALWAYS come on along with the SES or check-engine light. I had a misfire code paired with 2AAB, presumably because of too much inconsistent air getting past the wide open failed disa. Remember to always go oem, genuine BMW for parts. Do not ignore this code, as if the disa fails, the pin that holds the flap could get sucked into the intake, and have a very unpleasant party with your valves, AKA new engine time:(
n51 n52 bmw e90 e91 e92 disa valve failing