Of course I will concetrate on the daily driver
However the big classic can use in one day what I use in a month on the daily driver. It's a good idea to tune it since I don't really know how it should behave. Generally I am more used to diesel.
Anyway, when I encoutered the hypermiler tips I thought - wow! There more people who do these things I do! I use most of the tips. What I'm more interested in right now is mods.
I haven't found it anywhere. Is it true that changing the catalytic converter to a one allowing more flow saves fuel?