Depends...people who upgrade to the larger turbos from the 5.9 would have their stock 3.9 turbo laying around collecting dust, like me. Should be cheap to buy.Thats kind of what I was thinking. Adding a turbo probably be a deal killer after buying the motor.
There are thousands of turboed 6.9/7.3 IDIs running around with IPs that don't reference boost for timing or fuel rate changes. With these, the operator's right foot controls the addition of extra fuel after the pump is "turned up". Can the pump on a 4B not have this mod performed?Uh.. There's another "gotcha" when adding a turbo.. Namely, the non-turbo pump does NOT have the capability to add fuel as boost is built..
So a pump swap (and lines, probably) would be in order.