Well all your runs have a nearly identical 60' and the trap speeds are within 1 mph of each other so way below any statistically significant difference. That pretty much says that no timing was retarded due to heatsoak with the stock cooling system and the car did not advance the timing any with the ice. So this brings me to my original point of methanol injection, not only it lowers the intake charge by anywhere from 60 - 100 degrees, it also makes fuel burn a lot more controllable sort of like running race gas so the car can be tuned for methanol and run a crap load of timing advance. Furthermore it's feasible to always run methanol if it's not your DD as in one tank of gas you would probably go through 3-4qts of the methanol mixture and could have a 5-6qt tank. Most cars running meth have a fail-safe that instantly retards the timing back to normal once it senses that you're about to run out of methanol so there is absolutely no risk to the engine... methanol gives actual whp and very notable gains without the inconvenience of carrying ice, having a giant tank, yada yada. I'm not knocking your project but I just don't see any real benefit or point to it, otherwise everybody would be doing it and they would sell ice at the drag strip lol.