Just talked to the guy who dynoed my bike and is a very reputable tuner in the midwest. He says the pressure sensor will make corrections but probably not enough to compensate for the higher altitude, so expect a loss of power and the bike to run richer, he recommended making some small changes at the power commander to lean it out if necessary. Low= 0 to 1/3 throttle Med=1/3 to 2/3 throttle, high= 2/3 to WO throttle, making some small adjustments in the med and high part of the throttle position could potentially help. I have to assume he knows what he is talking about, he is a successful drag racer so he knows about tuning bikes. I'm gonna ride it see what it feels like and make changes during practice to see if the but dyno notices any difference. I'll post up when I get back, as to the results.