Ok so I stand corrected on the voltage. I never realized that the draw was only 5v. Interesting. Thanks for the info.
In terms of the SPI the reason I think it's dumb is exactly why you state. You have to pay another chunk of change for the adapter. I would just take it off the option list and put it in the accessories list. I'm just not a fan of being charged twice to get what I want.
I guess now the debate is for the Sept production cars that don't need the y cable anymore do you really need the SPI? I'll probably just end up getting it anyway. It's only 150 bucks.
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