95 3.4L Camaro Convertible eats gas!

Katies95Camaro
03-06-2009, 05:03 AM
What's kind of gas mileage should I expect from a rebuilt & tuned up 3.4L?

My 02 Trans Am 5.7L gets 18 mpg with no work done on it ever, this convertible barely gets 15 mpg & just barely passed smog.

Any idea how to increase the gas mileage & make it pass smog better?