For the benefit of Joe and others, I will try and clarify the way the AMSOIL by-pass system works.
In the case of the BMK-15 (duel-remote). This mount allows both the “full-Flow” and By-pass elements to be located on the same mount.
All of the oil is circulated at a high flow rate and “Normal” oil pressure through the duel-remote mount, going through the “Full-Flow” filter element and back to the engine. Along the way, some of the oil is circulated through the by-pass element, (10-15 percent of flow) as there is a channel built inside the mount. Now the by-pass element itself has a very restrictive filter media, so by design, it will not flow oil through it very easy. This allows the oil to flow through the by-pass element very slowly, about 6 quarts every five minutes with a 40-psi force pushing it.
Eventually, all the oil will run through the by-pass element, and the oil will stay analytically clean.
Now for the BMK-11. (Single remote) This mount only allows for one filter element, and that of course is the by-pass element. The “Full-Flow” element remains in the stock OEM position. Oil is fed to this mount from any oil pressure source. Typically, on the Dodge this is the 1/8th NPT port on the top of the OEM filter mount. This oil line feed is of high pressure, and is directed to the "inlet" port of the mount.
Oil under pressure is then fed through the same dense restrictive filter media within the by-pass element as is used in the duel-remote unit. As the oil goes through the by-pass element, it will exit through a very restrictive orifice and return back to the engine under very little pressure and flow due to this . 032 orifice. This orifice does two things; it keeps the oil pressure up, as the orifice is on the outlet side of the by-pass filter, and will only allow about 6 quarts of oil every 5 minutes to go through it, with a 40 PSI force pushing it as was mentioned above.
So to address Joes concern about the loss of pressure, There is no loss of oil pressure!
Oil is returned back to the oil pan anywhere one can find a good return, such as the valve cover, oil fill cap, or oil pan. I use the oil “Fill Cap”, by modifying the cap.
The biggest advantage of the duel-remote is the fact that both filter elements are mounted in the same place.
The bottom line is that both systems will filter the oil the same.
Hope this information is helpful.
Wayne
amsoilman