The 03' PSD has a lot more power than the 01' if I am not mistaken. If you check the Ford website they should really be touting this. Redesigned injection system etc.
The reason is twofold; better power to compete w/ GM & Dodge and emissions hence the slower start up; to prevent the initial surge of unburned hydrocarbons a diesel usually has at cold start. Hell all engines have them.
You should be able to pull any monster boat with that thing.
Wannabe in Motor City