Very interesting concept with two by-passes in the filter. Would be interesting to see what the pressure differential is across the filter versus rpm for a 911 motor with GT3 oil pump. I could not find on the HUBB website what the set points were of the two by passes, anyone know?
Pulling out some data from a post of mine a few years ago, it can be seen that most of the time the OC229 filter I was running was running in by-pass with a ~40psi differential across the filter. ...I changed to the W719/22 that Scott mentioned shortly after these measurements were taken, but never put both sensors back to see if the differential was lower with the larger oil filter.
Note: graphs are labeled incorrectly. Orange is oil pump out (point 1), and blue filter outlet (point 10)