I've literally tried this backwards and forwards on the dyno. I've packed the float bowls entirely with snow and put the fuel can out in the snow in the back of my dyno cell to no advantage. Packing the intake with snow can and will add up to 50ft/lbs at the hit but ,Cold fuel does not make power Cold air does. It does however affect the AFR--which way is up for you guys to debate. Your car went quicker because of 1000's of different variables including the possibility of the cold fuel making the AFR slightly richer/leaner. I wouldn't lose any sleep over it. J.Rob
Same experience here. I don't think cold fuel does much of anything. It makes it slightly more dense and a little less likely to vaporize. If those things add power then that is a clue about AFR and perhaps octane or the type of fuel that your are using. Cold air makes power and cold intakes make power. Insulating the intake with wood spacers can add power. Building a turkey pan around the intake and filling it with ice will add power, intercoolers add power, etc.
