[Sc2dave]

i plan on doing a lot of highway driving this and next year.Will a header help, evevn a little, to increase mpg's/ Some power would be nice too,but I'm thinking hardly nothing. 20111 non turbo

 

[Unit ZER0]

I don't think so... Go with an intake/throttle body spacer/catch can/use 89 octane/set your cruise control to 75 if you want to improve mileage over very long drives.

I have done these and some more to my 2013 LX, and regularly see 530+ miles per tank when long hauling.