Good adders
Tunes, injectors, or turbos, hands down the SINGLE best thing improvement I have ever had on any vehicle.
but the tuner is about 1/5 the cost of the other 2. Injectors are about $350.00 each (X8) and a good upsized turbo is about $2500.00 plus labor for installation.
Yeah ford diesel goodies are a lot more than cummins were. At least back in the day they were. I always do my own work. The really good think about fords is the number of owners. Somewhere out there in the Internet is a set of pics and directions for anything on a Powerstroke.