Sorry i took so long to get back to ya, been outta town.
So i swapped out the (what i am assuming were) stock champion plugs, they were slightly corroded away on the tips. I replaced them with some Bosch Platinum plugs. On my first tank, I didn't really get any difference in mileage. I was on christmas holidays, so my driving routine was quite a bit different. Now that school is in, I should be able to get a better comparison of mileage.