Wind direction/speed and sunlight/track surface temp are a couple of more things to add to your computations......good luck!!!![sm=smiley36.gif]

 

Man there seems to be some so-so driving going on. I watched '03's that were stock turning 13.7-13.9 and the 2 that only had Stage 1 were 13.0-13.2. The '04's should be good for mid-high 13's and with Stage 1 it should be the same as the '03's, maybe slightly quicker due to the LSD. Stage 2 ought to be good for high 12's all day long. It sounds like bad installs or driving.

To help out with the higher elevation, disconnect the battery for a while and then reconnect it to let the PCM learn to run right at the higher elevation. Every atmospheric condition and change effects the power and performance of an engine.