Honestly,
I am not entirely concerned about MPG, I bought my 2015 Black on Black 370z cuz its a bad car
!!
Thing is, my buddy is trying to get me to install upgrades like cold air intakes as well as a new exhaust system.. Quite unnecessary, but why not? LOL
I like to value my spending, so I figure if I get em, might as well have some return. Its not like I will be taking my baby to the track frequently nor will I be street drag racing anyone. The car handles like a beauty and I go to work in style..!
(Car can be a little quieter. Found a DYI thread on decreasing cabin noise - might be the first realistic 'upgrade')