I baught a DX motor. (i think it came from a 89 hatch)
I think they put the multi port injection from my HF on the DX motor and i think im useing the same HF ecu from the old motor.........My questin is.... why do i get 18MPG

That really sucks ass...... it really bugs me cause im a Pizza delivery guy and i got to fill up like every day almost



..........Any Help please
.......Thanx