Holy cow!!!! An hour??

I had an E46 M3 back in 2003 and used a Comforti Shark.
That took 30-40 minutes and I had to hook a battery charger up to make sure voltage never dropped.
Do you have to do that with the ESS.
How many tunes do they give you? Stock and just one performance? or do multiple tunes come with the unit.
Either way, I am caling Ilia on Monday. They are closed today and it appears they just got back from vacation

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2011 BMW X5 M
2009 Mercedes E63 AMG-FOR SALE or TRADE