Reviewed By Brad K (Severna Park, MD) Reviewed for a 1999 Jeep Grand Cherokee —8/15/2014 11:06 AM
Haven't had spacer longer enough to check for increased gas mileage, however. I am getting more umph.
Reviewed By Marcos E (CHICAGO, IL) Reviewed for a 2015 Jeep Grand Cherokee —4/15/2016 7:50 AM
This was easy to instal and you can see a difference if you drive a car that reads your miles per gallon, it did boost me up about 3 miles to the gallon. I didn't feel much of a power change but i do hear the whistle like a turbine once in a while depending how your gears change. I definitely would had not paid more than $30 for the other ones since you cant tell the difference dramatically but worth $30 for sure to instal as easy as it was.