The 400 mile tank

I got my first 400 mile tank yesterday and my mileage came in at about 32.4 mpg.  I think the warm weather is really helping.  I almost need to do another 'control' run to get a better idea of how my mileage is better since I've made my changes.  I think I'll wait a little longer though.  I could have went a little longer instead of filling up on my way home, I mean the fuel light wasn't even on yet, but I was too excited about getting to 400 miles that I wanted to fill up and see what my mileage was.  Turns out I could fit over 12 gallons in the old tank.