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Strange trim reading on GT3

Khattar · 2021-01-09T20:35:33+0000

997.1 GT3 At start-up bank 1 is at -15% and bank 2 at -25% (i assume this is open loop) Subsequently and while driving for a while both LT and ST on bank 2 are stuck at zero; While bank1 would be fluctuating in the -10% range for LT + ST combined. No error code or check engine but trims are either stuck at zero or bank2 will be very negative (almost -25%) This is my first GT3 and i have been learning the car everyday It behaves very different from my 997 C4S but seems to be the character of these cars I found alot of initially unnerving features from RMS leaks to daily morning rattles of death, but all has become familiar to me. However -25% fuel trim and then stuck at zero on only one bank does seem very odd ! Would greatly appreciate any other experiences with the GT3 and most importantly what do you consider to be normal fuel trims ? trim reading is of a bluetooth OBDII reader connected to my phone Thanks all!