I’m using the imani i2 cups with Spectra S1 motor at home, and the i2 cups with i2 motor on the go. The portable pump yields roughly the same for me with my Spectra. Usually low yield could be due to incorrect flange size. Are you using the correct flange size?
are you using the correct flange for imani? the imani yields the same as spectra for me
I’m having the same issue now! Wondering if you managed to figure out why?