Yes, both Foxflash and KT200 read/write Delco E98 without problem. Bench mode is recommended and it is faster. Some users also tested working in OBD mode. OBD works but takes longer. The network is very important.
KT200/Foxflash GM Opel Delco E98 ECU pinout
->1.3-2.0 16V Delco E98 Full System *CAN
Foxflash Delco e98 work 100%.
work bench mode perfect reading writing without problem not use bench box.
Delco E98 egr off read/write ok with kt200/ktm20/ecutuner