when in the driving seat the bank 1 is on your right hand side bank 1 has cylinders 1,2,3,4. 1 being close to the headlights, bank 2 is the left hand side 5,6,7,8. 5 being close to the head lights. I am not sure the but I think the firing order is 1,3,7,2,5,6,4,8