I ahve seen many supercharged installation where water was injected before the blower and seeing 1psi increase over 6 psi is quite normal.
We have not yet looing closely into the reason behind it. Some believe the increase is due to volume increase by the water vaporisation and other think it is caused by the tip seal effect.
If anyone knows other effects, please post to this thread.
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Richard L
aquamist technical support
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