In the wiring/user manual for an Apexi SAFC-II, it indicates the sensor type for all S14 & S15 MAFS is the same, S13 is a different type setting.
Z32 is HW-2
S13 is HW-6
S14, S14a & S15 are all HW-5
Manual, pg 30
http://www.apexi-usa.com/manuals/ele...fc2_wiring.pdf
Based on that, I'd say the voltages, etc are the same with the only difference being the connector.