2002 Chevrolet Tahoe • V8 4WD Automatic • 100,000 miles

Im a high school student and I buy a 2002 tahoe off my next door neighor, I waqnt to know how to increase the mpg on a 2002 tahoe 4x4 becuase right now I have a flowmaster american thunder dual on it.
April 29, 2011.

To be honest, there is no magic thing you can do to increase mileage. Just make sure it is running properly (tune-up) the exhaust system is doing what it should, and I do know there are different air filters that are said to help MPG such as K&N.