Just and update, I used the Arduino software 0018, and it could not compile that code. It came up with the error that line 540 had been redefined. Not sure what that is supposed to mean, but it also wouldn't let me just send it to the controller, so that will need some revision, or just to be renamed.
UPDATE: I just changed the Big Instant MPG to Big Instant MPH, and that passed the compiler. I'll be doing a road test this weekend if everything goes well enough.
DOUBLE UPDATE: I lied. The switched code values seem to work. It's got big CURR MPH displayed right now, so that should be current mph. I'm having loads of problems right now, so my apologies for the constant bumps and crap. I know how annoying n00bs are, and I am one