Phil,
Here are some answers to your propane questions.
1. Pressure loss is very minimal if at all due to the small amount of propane injected vs the bottles pressure. A 5 lb bottle of propane lasts over 50 1/4 mile runs!
2. I will take propane over gasoline for a fuel additive ANYTIME. You can't buy a higher octane, cooler, cleaner burning less expensive fuel! No loud aftermarket fuel pumps, cells, lines, GASOLINE in The trunk, and the thought that everytime I mash the juice i run the risk of fuel starvation and or detonation due to the low octane properties of gasoline. And the fact that the viper fuel system is not rated above 600 hp doesn't make me feel warm and fuzzy about tapping the fuel rail and giving that gasoline to a nitrous system.
3. Flammable gas? What about gasoline? Are you saying that every motor home is a traveling time bomb? What about diesel truck conversions? and even alternative fuel cars that use propane? Do more product research. Yes, users must take precautions with propane, but its not the product that does damage, its the ignorance of the uninformed user. That goes for any product not just propane injected vipers.
4. When you can make 750+ ft lbs of rear wheel torque with a stock engine on a nitrous engine with gasoline as the added fuel, please post the results for us to see.
Feel free to check out my website or contact me to learn more about this inovative system that has generated gobs of safe horsepower on cars like the viper, Buick GN, Prowler, Acura NSX, LS-1 Corvette and others.
Tom
Http://btrviper.com