Because they only have 6. 5 mm plungers.
Cummins (with the p7100) have 12 mm plungers. The powerstroke fuel system functions differently than ours, but it still has some serious disadvantages. After looking at the guts of a powerstroke injector, I'm REAL glad I have a Cummins.
Just a random piece of trivia for ya'all.
Chris

Just a random piece of trivia for ya'all.

Chris