? I would have thought the inverse were true.


Cold air is denser, so you get more hp from burning it (PV=nRT)
Cold air is, well, colder, so you get a greater temperature difference pre- vs. post-combustion

Perhaps pushing a car through colder/denser air requires more force, but I can't see it needing THAT much more force...

I know I could turn better numbers at the track with my old 300ZX TT when it was cold out or I used nitrous in the intercooler (the cold nitrous chilled the rest of the air so I got triple points - nitrous + colder intake air + higher boost pressure from the expanding nitrous).

Now, keeping the dang thing on the pavement was a bigger issue for me (there was some odd electronic rear-wheel "Hicas" steering thingy that kept screwing up. I suspect it was one of the early Stability control things Nissan thought of. That little light blinked more than a discotek on a friday night)