FYI, I actually called Ecotech a couple months ago and asked this very question. I do not know about the MP10 because I only have MP40's and MP60's and no THEY ARE NOT ACCURATE according to the rep I talked to. According to the rep and their web page, the MP40 max flow rate is 5000gph but mobius only shows 4500gph at 100% and the MP60 max flow rate is 9000gph but mobius only shows 7500gph at 100%. They said they updated their max flow rates due to they now have better calculations but have not updated Mobius to show the new max gph. He also told me that most people use there eyes to determine there flow settings and do not use or rely on the displayed gph in Mobius which I agree is a true statement.