Had a sizeable job today and decided to dual wand it, my first with the ProChem 650 hp. Seemed to have good suction at both wands you could tell a small amount of loss but minimal. The general pump kept up with both wands, with not as much drop in pressure as the cat. The thing that impressed me the most was that I had the temp lever turned all the way down and she was maintaining 210 with both wands going. I have had to turn it down more times than ever on the V. If you set her to about half she will reach and maintain 230-240 quickly and with ease. I have never put it on high temp, have to get my calises? used to the higher heat. Oh, I also set the rpm to high for the first time while dual wanding.