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Who has experience with twin screw impellers?

I have one on my SX190. The difference was amazing. No cavitation, for me, a higher top end because of the way it was pitched and the boat always has at least 5 people in it. I might even get another for high elevation.
Awesome to read, thank you! How much of an impact on low end torque - noticeable?
 
Asses in the seat the second I pound the throttle forward. If you're not seated, you will be. With the stock impeller? Meh...
That’s what I want to hear!
 
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