PennState

wow ur deff getting more gas milleage then me..

Sick Six

I was getting about only 240-280 miles to a tank
but for the past few weeks I've been hitting 310-320........go figure.
I haven't been driving any different either.

petepete

In theory assuming in winter you run a little bit richer (which is why you can get winter tunes for more power) Youll get worse mileage. IF your car runs rich you dont get as good gas mileage. For instance on my tune in the summer my car got better mileage. Now its winter and it smells like gas for few seconds and then goes away and its getting worse mileage. It is running rich.

Rupp

That's about what I get in my 05 vert just as a point of reference.

birdoffire7

It sounds like a bunch of you are getting poor gas mileage. I have the auto which claimed 19-25, and I get 25 combined and 28-30 highway.

Denny Carlton

Ok! Before the tuner and cai my mpg's was good, 18city/24h-way and the car ran like s**t. Now, with the mods I get 12-15city/18-21h-way, and now the car runs like a monster. I've never reset the computer and the battey thinge. With the tuner, do I have to set the tuner back to stock, and then reset the computer and the battey thinge???? To make it work right??? Thanks for any help, Denny's BBv6