He calculates the same way the Fed had, if you look at the chart it changes color in early 2006 as it changes from M3 (which the Fed had calculated) to M3-SGS Continuation (which is M3 as measured by Shadow Government Statistics). So it's just a continuation on this particular chart. But as far as M3 goes, it just measures the total money supply, you can't just lie about that, as it is a definite number. If you have a pile of, say, 100 $1 bills you are counting, you can't find another method to come up with a different result. There are 100 $1 bills, no bones about it.
But with CPI, the government changed its method in the Clinton years. For example, the old CPI was always calculated using the same basket of items, let's say for simplicity we're basing it on the price of a hamburger, fries, and soda. But now the government says if the price is going way up for the hamburger, people are going to substitute it for turkey instead. So they take out the hamburger and only show the turkey inflation. Then they change back to hamburger when it goes the other way. But when they do that, they don't include the amount by which the hamburger went up in price while they weren't including it. CPI is an easy number to manipulate in this manner.
Hope this helps a bit. Anyone else who can explain it better please feel free.