Gas mileage on 7.3 liter diesel?

This question has many variables, and due to that fact, many different outcomes. The 7.3 is an amazing engine capable of great power and terrific fuel economy. I have talked to people, legit people, getting over 30mpg on a regular basis. The key is setting up the engine to help it perform at its best. First factor, it needs more air than the factory air box can give. The best intake on the market is the Jobe Performance Intake for the 7.3 that comes with a high flow crankcase ventilator and the filter draws cold air from the bumper. It has many other benefits other intakes dont have also. Next, its must exhale easier and upgrading the exhaust is a must for this engine to produce its best mpg numbers. A 4 inch turbo back exhaust is the best way to go. After you have these upgrades done, you can install a tuner and this is where people typically can pick up 4mpg pretty easy, which is huge!! But to get the best results you need to have the engine ready to handle that extra power with the intake and exhaust or you can have some problems with egts that are way to high and the like. This is how you make the 7.3 perform at its best. The engine has so much potential!! Ben