I've noticed that I get just about the same mpgs no matter where or how I drive, in town, I'm a delivery driver so I drive fast and idle a lot, but it seems like I still only get 12 or 13 on the highway.....3" lift with 235s, new plugs and wires, tires are balanced and inflated properly....any thoughts?

I get the same, way I see it, it's paid for so paying for gas isn't as bad as a new car payment.

I feel like it can't possibly get any worse, so I'm just going to throw big tires on there and watch it not make any difference

Check your o2 sensor.

I was getting 11 and was 100% happy with it

Brandon

I don't have any CELs, but how would I check the sensor?