Hi I've got a 2017 3.5 Eco and was considering some performance changes. Mostly an exhaust. Then Cold air and possibly a tune. My question is how do each of these effect fuel efficiency? I'm in love with my 20mpg and dont want to sacrifice it.

Thanks
Geo

 

Why mess with what works for a few horsepower?

 

Not really worried about horsepower. Just wanted a better sound

 

Then maybe just a new muffler/exhaust?

 

If you want a slight increase in sound from the exhaust, just remove the resonator and replace it with a straight pipe.

 

Adding exhaust shouldn't give you worse gas mileage, besides stomping the gas to hear the sound. If anything maybe little better gas mileage because you are letting a turbo engine breath easier.

 

Enable the V8 in FORScan LOL It's a whole lot cheaper and you won't lose your 20!
TomJV