G'day got an r31 skyline with the stock motor in it (putting in turbo motor soon) It has a jatco non turbo 4 speed with full manual valve body from keas and stage 3 shift kit The car itself seems to be chewing through the fuel, drove a 250km trip today (highway and city) and it used virtually a full tank of petrol. The over-drive is hooked up so thats fine, so why is it using so much fuel? anything else needed to be hooked up? Thanks! Its a non turbo box so would it be something to do with the lock up convertor? thanks