I have noticed that when I toggle between units on the FlashScan unit that the wideband AFR does not toggle as it should. Here is my options.ini file (well, an excerpt of it).

Code:
*FD_Gen
;
;Node PIDs (pid1|pid2|...|pidn)  Alarm (min:max:style:time*10ms:hold*sec)
;---- -------------------------- -----------------------------------------
PCM,  RPM,                       0:6600:3:1:0
PCM,  TP
PCM,  AFR
-,    WO2AFR1
PCM,  KR,                        0:4:31:5:0
PCM,  SPARKADV
PCM,  ECT,                       -40:110:1:1:0
PCM,  EOPS
PCM,  IAT
PCM,  MAP
PCM,  VSS
PCM,  DYNCYLAIR_M
PCM,  IAC
PCM,  IBPW1
PCM,  W02ST1


*PCU
;
;   PID         Caption     Prec Units Op    Factor        Offset
;   --------    --------    ---- ----- --    ------------- -------------
PCM,RPM,        RPM,
PCM,TP,         TPS
PCM,AFR,        AFR_CMD,    2,    AFR,*,   1.0,           0.0
-,WO2AFR1,      AFR_ACT,    2,    AFR,*,   1.0,           0.0
PCM,KR,         KR
PCM,SPARKADV,   TIMING
PCM,ECT,        ECT,        0,   °F,    *,   1.8,          32.0
PCM,IAT,        IAT,        0,   °F,    *,   1.8,          32.0
PCM,MAP,        MAP
PCM,VSS,        VSS,        0,   mph,   /,   1.609344,
PCM,EOPS,       EOP,        0,   psi,   *,   32,          -16.0
PCM,DYNCYLAIR_M,DYNCYLAIR_M,2,   g/cyl, *,   1.0,           0.0

As you can see I've renamed many of the parameters. When I toggle to custom units, every parameter besides -,W02AFR1 updates to new units. -,W02AFR1 just stays as it is. It does not change the name to AFR_ACT as it should.