IP Adjustment for Altitude
We've just moved to a higher altitude (PA @ ~2000' to NM @ ~7000') and think we need to adjust our IP in order to make our DTA360 run more efficiently. Prior to reaching Colorado, we were consistently running with a water temp in the 160~180 range (dependent on load), useable power, and little to no smoke. Since reaching CO and NM, we have been running hotter (up to 210deg. -- we stop and let her cool down before it climbs any higher), seen a significant reduction in power as temp rises, and now produce significant amounts of black smoke under acceleration.
We don't seem to be losing any noticeable amounts of engine oil, so we believe that we are simply run rich due to the change in elevation. With all of this in mind, how do we adjust the ip for the higher altitude? Is that the right step to take? Are there other adjustments that need to be made to compensate for altitude?