Anyway, I'm thinking about disassembling my loop tomorrow and using the stock Intel heatsink temporarily along with a cheap pci video card. This will allow me to still use my computer (at stock speed with crappy cooling) and clean my components.

With the loop out, I will be able to do some accuracy testing with a bucket/stopwatch while still connected in my computer for rpm reading. I did some calculations with the Flowrate estimator and I should be getting about 4.6-4.7 LPM with my current setup. The flowmeter read half of this and tweaking SpeedFan to multiply the rate by 2 got me in the same range. However, is that correct or not ?? That's why I will do further testing.