Fuel Economy

[why?]

Originally Posted by malibuguy

got 51.98mpg last tank...i kinda killed some of it on my last commute home, i kinda had to rush to catch a store before it closed & i got out of work late...but this proves the car prefers the stock exhaust for best fuel economy

Compared to what? I can pretty much guarantee there are exhausts out there that will get better gas mileage. And then there is always Unobtanium.