Originally Posted by scotto-
Too bad we can't inject dry nitrogen in to our engines like we can our tires.....
^^ If I remember correctly, someone tried this many years ago. This was on a small block chevy I believe. They basicly connected there AC output to the air cleaner intake, in theory making there engine "think" it was winter. It was a dead end though, being that any gains in HP were lost due to parasitic drag from the compressor.
But yea, colder air can make a huge difference in power, most pronounced if you richen your jetting to compensate for the now denser air.