Ok, I am going to admit my ignorance in the interest of learning something So those pictures are of the ducting from the airbox to the throttle body and they are coated in oil because there was a vaccum leak in the ducting that killed the vacuum which allowed oil from the EGR or something to enter back into the system due to a lack of vacuum? If true, did it kill your MAF? What model of car is this, please?

Thanks!