Got the pump. I was a bit concerned when it was labeled 3hp instead of 2hp. It has lower amperage rating the the old, so I'm thinking that "uprated to 3hp" means that they've just designed it better and it's just marketing hype. Hopefully it isn't designed so much better that it is too powerful. In my researching this, I came across mention of a "spring loaded bypass valve" that allows full flow through the filter at low speed, but opens at the higher pressure when in high speed to bypass the filter with the extra flow. I can't find any valve like that. Nobody knows about it or thinks it is necessary. My (Hayward C500 50 sf) filter has a pressure gauge on it, but I don't know what "normal" pressure for my system should be. And I don't recall what it used to be. Some comments suggest 15 - 20 psi. (I contacted Hayward and they told me this filter has no bypass in it) What is the reason for high speed, just for the extra jet pressure? To occasionally stir up sediments so it circulates to the filter? Is it possible to disable high speed(Balboa VZ500C spa pack). If it's too powerful? What will happen first, will the motor burn out or the filter explode? I'm going to put it all back together today and see what happens. Pray for me.