c. wilson

Hey all... I'm sort of a newb to the forum (lurked on and off for years). Thanks to the powers that be for a great site! Situation: Moved from Southern California to Idaho. So, changing from Glamis to St. Anthony. From near Sea Level to about 5000' from what I've read. Question 1: My wife's bike is 100% stock. Does Yamaha jet the bikes differently for where they sell them (say California vs. Idaho)? Instead of rejetting hers I'm wondering if I just added an intake w/K&N if that would do the trick or if I even need to do anything at all. Question 2: My bike is very mild (K&N in the stock airbox, lid on, snorkle off, FMF fattys, TORS elim.). Is there anyone who can give me an idea of where to start on the rejetting for that altitude? I've checked out the altitude chart but was just wondering if anyone already has a similar set up at a similar altitude. Thanks!!