Hey Terry should I invest in one of these too? LOL
Water injection has been used with Grand Nationals by the top two guys for years. There is one dude running 30psi on a stock lower end, engine never broken down. He uses H2O injection at the higher boost levels (turned on by a boost actuated solenoid). He uses a pressure transducer to read intake prAt a given (he determined what psi) pressure the system actuates. He is running low 10's in this car (and has been in several GN type magazines too)
