Jandree22

k, I know that intakes have a tendency to slightly lower gas mileage because of the increase of gas pumped in by the ECU.. but, I have heard that cat-back exhausts will increase your gas mileage because of increased efficiency, any truth to this? how about headers? thanks

Tetryl75

I was told that exhaust will increase gas mileage, but I don't know the theory behind it.

01civicboi

iTrader: (2)

you'll probably rev too much like i do and lose milage.[IMG]i/expressions/laugh2.gif[/IMG]

Jandree22

oh so true... i'm sure I will![IMG]i/expressions/beer_yum.gif[/IMG][IMG]i/expressions/beer_yum.gif[/IMG]

mohawkboom

iTrader: (1)

Exhaust does increase gas mileage but pretty much unnoticably.. like. .04 miles per gallon.. An Intake will Noticibly affect your gas mileage. What happens is the oxygen sensor in your exhaust detects more oxygen(easier flow out of the cylinder, More clean air goes into the chamber each time and more fuel is injected) But as I said.. the difference is irrelevant.

Cheers
Mohawk

Diznavis

hmmm maybe i will get an exhaust then. thats a question ive been meaning to ask for a while

2002DX

You shouldnt really worry that much anyway because a Civic gets like 38 mpg to start.

Jandree22

yeah, i know the Civic's are already amazing with gas mileage and I shouldnt complain.... I just was wondering if the exhaust would counter-act the intake's lowering of MPG, but oh well, i worry too much

Amphiprion

By the sound of how many of the people on this site drive, I doubt getting good gas mileage is a top priority.

"One of the reasons I bought a honda civic is for the great fuel efficiency.............and by the way, I smoked a ford focus yesterday!!" Hehehe

Dakker

hehehe

Diznavis

<< By the sound of how many of the people on this site drive, I doubt getting good gas mileage is a top priority.

"One of the reasons I bought a honda civic is for the great fuel efficiency.............and by the way, I smoked a ford focus yesterday!!" Hehehe >>



i did get the car for gas mileage. i dont race it (unless i want to get in front of some slow a$$hole) i did the same with my 88 dodge omni and still got 33mpg (rated 25/32)

Mokushi

I haven't noticed any significant differences in gas mileage before/aftre installation of my CAI and Cat-back exhaust. I still get ~34MPG with 17" rims and tires... So I can't complain.

CarbonFiberSi

iTrader: (1)

It probably will increase the milage but it sounds so good with intake and exhaust so you'll be driving harder
to hear it so you're milage will go down. I've tried to get a good tank of gas but I keep getting the need to
drive hard so I ruin the test.

Purple2001Civic

iTrader: (1)

so far i have not noyiced any difference in gas milage. getting ready to take the res. off will let yall know how it does then