Has anyone else used an Ultra-gauge in their E53? I'm curious about the correct OBD-II protocol to set it to. I'm thinking ISO9141, but could it be CAN? I can't access some of the gauges I'd like to monitor, and I'm thinking it may be a protocol issue.

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2003 E53 3.0i
DOB 10/15/2002
Sienna red, Savannah Beige Dakota leather
Type FA53, Engine M54B30

2018 G02 30i
DOB 4/21/18
Black Sapphire Metallic / Canberra Beige Vermasca leather
Engine B46O