Well, I posted my last tank last week, and to my disappointment, it was lower than expectation... ~52. But watch out for the next, it's going great guns.
I bought an MPGuino, but don't know enough to install it on my own. Going to the dealership this weekend to get it installed.
You seem to start with a handicap in this race, as it is only an automatic - (I EOC a lot to get to where I am)
I have no mods except no spare tire, and tire pressure up to 55 PSI . I have 50 PSI on the garage description, but today have pumped it up so I don't have to top up very often.