I'm getting a Astra GSI soon and am looking at regals options with sport button.
I do a fair old wack of mileage and would like to do some mods to save on mpg. I'll be looking in 6 speed M32 conversion, but I actually would like to see if there is remaps that decrease the std bhp with the sport button off to get decent mpg?
That way when I get the urge to feel the power I can just press the sport button and all the other times hopefully I could get mid 30s to high 30's mpg?
May sound stupid but Is this possible?