Also, adjusting the governor will increase the rpm limit. I have not done this myself, so I'm not sure of the procedure. But know how it is accomplished.

__________________
Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k