Wow, thanks! I've had the BMS Can Flap module plugged into my OBD2 port for exhaust valve control and active sound delete and at the track I remove it, manually unplug the valves, and then plug in a OBD2 reader to work with Harrys lap timer and track addict for input. I suppose these items keep interfering with the RPM shift lights? Its interesting that everything else on the wheel works fine except the shift lights and that the issue is only intermittent. Thanks again for any additional advice/insight you might have...
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