I have been using oiled filters for 25 years with no problems. The manufactures like to blame them for dirty MAF’s. Those can be cleaned no problem, but the hot wire/film MAF’s can die from oil on them. As far as intakes, they don’t do much for many of the modern cars on the road today especially if it is a MAF airflow set up. If the ECU will not adapt they don’t do anything and on many cars today, the ECU will tune out what you do.