... or in general anyone with an aftermarket full cat back exhaust.
Has anyone else experienced improved fuel mileage?
After I had my Vibrant installed I\'m constantly hitting around 350ish at half tank.
Even after I replaced my air filter to a K&N a week later it was pretty much the same result (350/360 @ half tank).
And againnnnnn.. no. The car is NOT granny driven. I\'m stuck in stop & go in the mornings and I\'m hammering it home at 140 at night. If anything I\'ve been beating on it to hear the exhaust...![]()