Originally Posted by Kurts
1.) My Coupe was fairly stingy on the gas, too, but then again, nothing beats a steady smooth speed down a freeway!
2.) The denser the air the more gas you can pack in the cylinders (hence the idea of a CAI) so that makes sense. Wonder what it would be like in Death Valley?!
3.) This always depends on butt size

! Seriously though, I've never noticed any cramping issue but since I have no as_ (like the ole George Carlin line: I have to pack my wallet full of singles just so it looks like I have one.) I can't really say for sure.
Yeah, I know lower altitude is more air, but I didn't think it would make that much of a difference (based on my previous experienes with other vehicles).
I probably just need more long distance hauls in my XF (which I have absolutely no problem doing so).