Are there any performance numbers that compare the S2K at a higher elevation compared to sea level?

Just curious on how much a power reduction would be present at a higher altitude in the S2K.

 

Can't say in objective terms but I did some spirited driving at 7000 feet and subjectively the car felt noticeably less powerful than at sea level where I do most of my driving.

 

here's a rough equation:

hp loss = (elevation x 0.03 x hp@sea level) / 1000

Just think of it as 3% loss for ever 1000ft you go up.

This isn't really vehicle specific...pretty much the only factors are NA or FI. FI generally lose less because the turbo/sc can compensate for the thinner air to a degree by increasing boost pressure.