I thought that it was a temp well below ambiaent(sp?) temperature. Your right, I have not had the chance to check if that is at the bottle neck, or the hobbs at the y-pipe. I'm not sure of anyone else who runs propane, but Detpac liked it alot. Not sure what he used to tune...
So I talked to my uncle about this today when I stopped out by his shop and he thinks that we are all insane. first for trying to get hp out of three liters, and second for trying to run 25psi...
He does not understand why you would run a water/alcohol mix. when his meth gets diluted by three percent he tosses it. He has a problem with running water, as if your spraying alcohol into the y-pipe it will cool anyway, why not just run complete alcohol. it's 2 bucks a gallon. why pay more for prestone?
He also said that running alcohol injection on a warm humid day will result in the y-pipe, throttle body, and runners sweating unbelievably bad. not a really big deal, unless everything you have under your hood is chromed and polished. wheew. Glad that's not anyone we know... oh wait. damn. He said that he has had engines with puddles under them on the floor.
He said that he would also be concerned about washing the cylinder walls off with the water/meth mix, but admitted that he does not have much experience with the mix. I have heard on the same GN sites that I originally researched about how on engine tear downs all the parts looked like they had been "steam cleaned" now, they also said that the cylinder walls showed no extra damage, but I could see it go both ways...
450 for a barrel of VP C-16. 8 bucks a gallon... hmmmm... He also questions the need for C-16. he thinks that you should try 100, 110, and so forth up to the C-16, which is actually like 120 octane or something right? If your running to much octane your slowing the firewall in the cylinder down and it's actually costing you power.(though proably not much) you want just enough octane so that you don't see knock.
He also wanted to sell a barrel of the Rocket Fuel. He said they have some neat stuff too.
while we're on the subject of fuel...
I went down to jesse's the other day. 31 mpg on the way down. that's after buzzing around town for a bit before I left. Get to Jesse's house. almost out of gas. Have to fill up by Jesse. 10% ethonal piss water. boo that.
on the way back I got 28 mpg. this is averaged in with the 31 on the way there, also, so it was actually more like 26~25 mpg.
Got up this morning to do the daily grind thing... got home, and looked. I averaged 24 mpg where I usually average 28.5
I hate ethanol pee water. I feel sorry for you guys running it in your stealths.

that's another reason to run race gas right there.
I would be highly suspisious of that stuff. It must burn leaner too...
