The power of the spray is somewhat reduced (in bypass mode as expected it's normal flow) but it can give a fairly firm stream or spray. Love that nozzle.
The results were a spot free dry. I have a black car and any drop that gets overlooked usually leaves a nice white mark, I've used it twice with none of the spotting of the past.
The filter came with a sheet that said" In some areas a more economical cation cartridge may be effective, available for $17.00", I guess in areas with low TDS ?
They mention a relation to flow rate and minerals dictating life. And a formula using 7337/TDS=capacity in gallons. Guess where the meter would come in handy. Not sure if it's like other filters that have a reduced flow or turn color when they're used up, but I figure I'll see how it is in 9-10 washings.