Common problem low pressure at idle.. Your pressure is OK.. and it sounds like you should be able to go anywhere..the problem is the smoke from the exhaust and oil smell. No leaks? Looked at bottom of turbos back and front of engine for leaks? If none look inside your air duct tubes.. tubes that come from the air cleaners to the turbo and then from the turbo to the intercoolers. Could be something simple like PCV hoses and valves