1.-Carlos, It was nice to meet you, glad you made it.
2.-
He called you dick weed...
3.-
power loss (in HP) = ([elevation in feet] x 0.03 x [HP at sea level]) / 1000
So, at 10,000 feet on a normally-aspirated Xterra (~170HP) you're looking at a 51HP (30%) power loss.
Thats great XPLORx4, That is Exactly what this board should be aboot, getting information to assist each other,well done.
4.-
strictly a GP flipping.