gas mileage

[viperrt450]

I am getting ****** gas mileage around 14mpg. Around 150 miles per half tank. I don't floor it. Just normal everyday driving. I have new O2 sensors. What could it be. My friend just got a SS y-pipe and he got 50 miles better with flooring it.

 

[90 white sho]

I'm in the same boat as you, although im not too easy with my car, on a typical 16 gallon tank i get around 215miles (about 14mpg), i think i may need to change plugs and wires and get a new colant temp. sensor.