Water alcohol never delivered same relative performance boost for turbines as pistons.
The main claim to fame for turbine rotorcraft was to allow basic L model to take-off at MGW (4000 pounds) above Sea Level.
The WA system was only certified up to 10K PA, and after that really did not give any performance gain anyway.
Standard engine was barely able to TO at MGW on hot day temp limit at Sea Level.
Water Alcohol raises TO limit to 3000 PA for same temp.
At higher PA the difference in performance is usually about 100 to 125 pounds more payload.
I seem to remember the WA kit weight was about 25-30 pounds plus weight of water mix?
