UM.. Its an 06 how many miles do you have? Do you realize that your car has a 5 year 60,000 mile powertrain warranty? It depends how much oil was blowing out your tailpipe and how much was blowing through your intake system to show a pressure drop. I guess it could happen just because they are under pressure as well. Sounds to me like you simply lost your turbo. Id replace the oil pump since you already bought it.