From Super Duty to Heavy Duty, all the way to MEGA Duty, if there's a large displacement diesel with a massive turbocharger under the hood, it's designed to be a beacon of durability in a world of truck abuse. Ford launched the 1999 F-Series Super Duty utilizing the 7.3L Powerstroke with every intention of that truck lasting for an eternity. Over 20 years later, there are more than 725,000 of these trucks (including the Econoline and Excursion) still hauling and towing on the road today. Even though there are still almost ¾ of a million 7.3L Powerstroke powered Fords on the road today, they're showing their age. Components are starting to wear out, specifically when it comes to the intercooling system.
It's a known fact that boost pressure works best when it stays inside the system.