Hammr.... ??#($$@(@)!!#_! maybe i read you wrong... but the fact is cooler dense air is better.... it's about filling the cylinder with as much fuel and air as you can.... go back to your ballon,,, can you put more air in with cold or hot air.... this applies to all engines..... hey jeff,,, way to go at the shoot out this weekend..... nothing better than making those big numbers and driving it back to the trailer, alive and well... again,, great job to you and the team !