GGG posted:
"So when using PS-32 steam upgrade boards, keep the PS-32 flash code and only load a PS-3 sound file if you want. If the features/speed control are not compatible, load the PS-2 sound file."
https://ogrforum.ogaugerr.com/...e-information?page=6
So what chain file is on the board? The stock one?
I'm not sure but it was posted that this board is pre-loaded with a diesel sound file. Maybe that's the issue?