[bestatchess]

I have a Pro4x CC I hope for 15mpg. The best thing you can do is sell it and get a car. You can try to get long tube headers and free flow cats and exhaust and a tune with uprev get smaller tires that will all help...

I just installed DTs, JBA cat back, replaced secondary cats with MF 94035s, Injen, Uprev and was shocked to note a 1 mpg improvement over stock on the performance map, even with my right foot spending quite a bit of time on the floor. Have not done any substantial distance on the economy map.