New highway ride ...

Miller15

Well-Known Member
36
8
Travel car project starts tomorrow. 2015 EX sedan. I'm looking to improve the car to maximize hwy mileage. I've Ben trolling for a few days to get familiar with the site.

Stay tuned ...
 

Miller15

Well-Known Member
36
8
A light foot to start with!

After that, maybe open up the intake & exhaust a bit, lower slightly, & see if I can find a few aero enhancements.

Open to suggestions also ...
 

W3R0

Well-Known Member
169
30
WA
Vehicle Model
Civic SI
Body Style
Sedan
Correct me if I'm wrong but, isnt more air (cooler) bad for mpgs?
 

Miller15

Well-Known Member
36
8
Internal combustion engines are just complicated air pumps. The easier it is to move the air in & out, the better. Less work trying to suck air in & push it out means more efficient power available to move the car.

Very few cars won't benefit from intake / exhaust improvements. The mpg's tend to go down when you put extra "foot" into it to hear your new intake / exhaust.

I'll document my progress along this journey. I've got a 700 mile round trip each week for work, so lots of hwy driving to measure.

I will retire this from the daily commute ...
 
Last edited:

NoMoreNissans

Well-Known Member
512
315
Ottawa, Canada
Vehicle Model
Civic LX
Body Style
Sedan
just an FYI aftermarket intakes dont really do anything useful on these cars, especially the nonSi trims. they just confuse the ECU without a tune and usually result in worse performance/mileage. your best bet is to reduce weight, especially by getting lighter rims, and to find some low rolling resistance tires
 

Nomar06

Super Moderator
Super Mod
7,826
4,938
Charlotte, NC
Vehicle Model
Fiesta ST (FiST)
Body Style
hatch
You could air up the tires for less rolling resistance.

Some of the hybrid/hypermiling forums I have seen tend to put the tires at 40psi or so to try and improve MPGs.
 

Miller15

Well-Known Member
36
8
Perhaps, then, just a synthetic drop in filter for easier flow. I'm not interested in getting it tuned at this point.

I'll play with tire pressures to see if there is a measurable difference.

... not ready to invest in lightweight wheels just yet either.

Thanks for the feedback
 
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