So now I need to buy a download cable and disk.......where do I get this from.

Bought this 2 weeks ago still cant use it........

Back in 2004 I had a 04 with a 03 engine and I put in a Diablo tune without any probs, it gave me no problems at all over the years I had it,the truck was stupid fast and got awsome mileage,I sold it and regreted it ever since,so I bought another PSD and a Predator hoping this truck will be the same ...

2003 F-250 built 04/03 cal. no. VXAP2N2HEX' Version V.9r03

I guess Im a rare truck also ,I got my tuner today and Im having the same problem.......HELP!