| injection for 6-7 yrs and at this point I only use it when I run super high boost and /or ambient temps are extremely hot. I also only spray after 16psi .. I like the buffer of running rich on higher boost only. Additionally, my nozzles are too small to drop a full point - but you are correct if I had the right nozzle size - I would see a full point drop in A/F ratio. for the reasons you stated, run low on fluid - system malfuntions -- I am not 100% comfortable running more aggressive tuning with water injection. In fact, we only used WI 2x on the dyno and saw no power gains or loss at the same boost level. IT did allow me to sustain the curve longer over RPM band. This is when we figured out that my nozzles were too small with the intake upgrades I haev made over the years. I wasn't chasing power -- race gas is for that ..I wanted a buffer. With Nistune though, it would be pretty simple to load new programs and I might create a WI tune for the rare occasions I don't want to run waster gas and run crazy boost.
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