Sportster rejet for SA trip?
 

Question: I'm planning on riding my 2008 XL1200C from Minneapolis to Ushuaia and back, and I'm wondering whether it would be a smart (or necessary) investment to purchase a cobra Fi2000 powrpro or power commander to deal with the altitude changes (altiplano, etc.). I won't be leaving til Fall 2012.

I would have thought that EFi compensates automatically for altitude.