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gas milage with intake?

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Old Dec 1, 2002
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gas milage with intake?

has anyone experienced any increases or decreases in gas milage with SRIs or CAIs? and by how much? i've had a generic SRI installed (which i removed recently because it was waaaay too loud, planning to put in an injen or aem) and i didn't notice any mpg change...

i guess we would be losing gas milage with an intake right? more air = more gas ...
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Old Dec 1, 2002
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if the intake makes more power through the powerband (or most of the powerband where u are usually at, ie: low end).. than you should be saving gas..

why? takes less power at xxxx rpm to achieve xx mph. more air does = more fuel though, but not necessary less mpg if there is power increase (note, just cuz you have more air in, doesn't mean u have more power)

but I lost mpg with my InJen SRI... even when I drive like a grandma.

I duno how the K&N drop in increases my mpg by 3-4, since I totally dont feel any gains what-so-ever.. but it does. and I tested it with two full tanks twice.

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Old Dec 1, 2002
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I have an AEM CAI and I slightly less mpg than I was before. But not too much. I noticed a slight power gain, but barely.
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Old Dec 1, 2002
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if you drive normally (without heavy acceleration and going over 3,000rpms) you'll end up with better gas mileage. I often floor it because i like the sound, so i'm averaging a little less than what i used to.
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Old Dec 1, 2002
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[hr]Originally posted by: Mex
if you drive normally (without heavy acceleration and going over 3,000rpms) you'll end up with better gas mileage. I often floor it because i like the sound, so i'm averaging a little less than what i used to.[hr]

Same here... but it's fine with me
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Old Dec 1, 2002
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I wouldn't know for sure. All I have now is an intake and I seem to have lost gas mileage, but that's not due to the intake, it's due to me using 5w-30 instead of 5w-20 motor oil.
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Old Dec 1, 2002
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An intake will result in slight lower gas mileage. The ECU will dump proportionally more fuel through the injectors to compensate for the increased air flow. More power = worse gas mileage.

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Old Dec 2, 2002
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I can't seem to get out of the weeds on fuel consumption, I had an AEM intake on my car w/ roofrack & 17's and was getting 25/30. I took of the AEM and the rims and now im getting like 25 city / 25 highway (and i even reset the ecu)!!!

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Old Dec 2, 2002
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Well, after my first fill-up with a K&N FIPK, my mileage is still average, even though I did a whole lot more city driving. My current tank is alot of highway driving, and so far, it still looks about average.

-Kre
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Old Dec 2, 2002
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I have noticed a slight decrease in gas milage after the intake was installed...But it seems to vary depending on the wind. I drive mostly on the highway.
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Old Dec 2, 2002
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Current mods: AEM CAI, Magnaflow catback, and AEM pullies. I am getting a combined 36-38mpg! Before, I was only averaging 34-36mpg.
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Old Dec 2, 2002
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I didn't notice a difference with my CAI
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