For remap wheel: open gimx-config, select Type / G29 PS4. Then switch to Axis tab, click Auto Detect then rotate your wheel. Select Wheel in Axis list box, click Add. Click File / Save and you're done. You should also recheck device list and delete other wheels device, make sure only 1 remain.
Is there any switch to change PS3/PC/PS2 mode? You can try all possible cases.
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