CAI and Fuel mileage

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Old Feb 12, 2008 | 03:14 PM
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CAI and Fuel mileage

Hey everyone,

I was curious to find out what people are getting for mileage per tank. I bought a K&N Cold air intake kit for my '04 Acura TL and i seem to be getting worst gas mileage . Your input would be great.

Thanks!

Steve
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Old Feb 12, 2008 | 04:40 PM
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Ofcourse you are going to get worse gas mileage because you are going to want to put your foot in it for a couple of weeks. Once you start driving normal again you wont have this problem.
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Old Feb 12, 2008 | 04:53 PM
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'04 TL auto with AEM CAI...

conseratively - 24mpg mostly city driving

somewhat aggressive - 20-21mpg mostly city driving
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Old Feb 12, 2008 | 10:39 PM
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Mine has gone up a consistent 1mpg since I got the CAI. I am now able to cruise in 6th gear at around 40mph instead of 50 and I think that's what helped the most. I'm getting 25 mpg with city driving, heavy throttle most of the time to get to speed.
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Old Feb 12, 2008 | 10:49 PM
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i dunno if it's just me..maybe i just go WOT too much...could explain why i change tires every 5-6 months and had to get completely new rotors after 17k miles...but i was getting 10-11 MPG, and now i get 12-13 MPG.

i have the Fujita CAI
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Old Feb 13, 2008 | 04:46 AM
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yeah ive had it for a little bit now and i think ive calmed down on the lead foot. i think i average a little under 300miles per tank.
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Old Feb 13, 2008 | 09:52 AM
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Originally Posted by JCL622
i dunno if it's just me..maybe i just go WOT too much...could explain why i change tires every 5-6 months and had to get completely new rotors after 17k miles...but i was getting 10-11 MPG, and now i get 12-13 MPG.

i have the Fujita CAI
you're telling us that your TL is getting MPG's like a Hummer...?
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Old Feb 13, 2008 | 10:09 AM
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Originally Posted by scubasm161
yeah ive had it for a little bit now and i think ive calmed down on the lead foot. i think i average a little under 300miles per tank.
i'm about the same...i usually get at least 300 miles per tank city driving...normally i'll get 320 though...
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Old Feb 13, 2008 | 10:30 AM
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Originally Posted by rimz
you're telling us that your TL is getting MPG's like a Hummer...?
yea... i guess

iono, it's probably largely due to the face that I'm in love with my intake sound and every long strip of road i see I get the urge to just punch it....the drone from the CAI and the Stage 3 gets me going...like right now, i'm working on no sleep at all (all nighter on a 12 page paper...hehe college days eh?) I dropped off my gf this morning and as sleepy as i was, as soon as i went WOT i felt so damn good, adrenaline and everything...i came back to my apartment, and i'm about to collapse lol..

but yea i realize having the MPG of a Hummer is retared, i'm thinking once i do the magnaflow setup, it'll be so much louder that i wont be always hitting WOT and i'll probably tone down a bit.

LOL if THAT doesn't work ....what if i've had a lemon for the past 4 years
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Old Feb 15, 2008 | 05:12 PM
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Originally Posted by rimz
i'm about the same...i usually get at least 300 miles per tank city driving...normally i'll get 320 though...
ive had this convo with alot of the members here.....lol i barely get 200 miles on a full tank and i cant figure out why. I dont have a lead foot and for the most part I drive conservative. ALl the guys that say 300 miles on a full tank WOW. I wishh I could get at least 250.
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Old Feb 15, 2008 | 08:57 PM
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Originally Posted by TLType-s12
ive had this convo with alot of the members here.....lol i barely get 200 miles on a full tank and i cant figure out why. I dont have a lead foot and for the most part I drive conservative. ALl the guys that say 300 miles on a full tank WOW. I wishh I could get at least 250.
damn...barely 200? i've got a little under 1/2 a tank left and i'm at 190 miles...

i dunno...how many miles are on your '07?
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Old Feb 16, 2008 | 01:59 AM
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I usually get about 320-350 a tank!
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Old Feb 16, 2008 | 02:01 AM
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my milage went down only because I was driving harder, but on my way home from the track today I reset MID and got 33 mpg on the highway.
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Old Feb 16, 2008 | 02:29 AM
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ha

my TL-S gets about 200 per tank on city driving.... but, thats when the light comes on, and as we all know, the light means you still have like 3.5 gallons of gas left

so 13.5 gallons / 200 miles = 15mpg

i do alot of city driving too, so its a pretty accurate experiment

my 06 TL usually got about 240.. or 18mpg
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Old Feb 16, 2008 | 02:43 AM
  #15  
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Originally Posted by BLACKURA_NY

the light means you still have like 3.5 gallons of gas left
you know last week I was driving to school (~10-12 miles away) and my light goes on b/c I was running out of gas. Then the needle slowly moves towards the "E". I really wanted to just keep driving both to school and back home on that same tank of gas. When I left school, I went ahead and refilled it b/c I was afraid of getting stuck in the middle of the night. So leaving my house I had 265 miles when the light came on, then I filled it at like 284 miles. You think I could have gone longer? Again, the needle was almost at the E.
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Old Feb 16, 2008 | 09:54 AM
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ive noticed that one it gets down to 1/4 of a tank the needle drops faster. this time around i got like 260-270 miles per tank. so if thats what everyone else is getting then i guess i dont feel so bad...What size tank is it?
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Old Feb 16, 2008 | 11:49 AM
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Originally Posted by scubasm161
What size tank is it?
17 gallon tank...but your light will come on with 3.5 gallons left, like blackura said...that way you don't run your car till it's on fumes...the most i've ever put in at one time was 15.xx gallons...and that was when it was way down on 'E'...it uses like 2 gallons as a reserve, just in case you have to keep driving before filling up...you get like +/-50 miles out of the reserve side...there's a thread somewhere around here explaining it better...
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Old Feb 16, 2008 | 12:36 PM
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I did the mod in my sig a couple months back and still get 22-23 mpg in the city. highway is in the 30's. =)
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Old Feb 16, 2008 | 01:52 PM
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my 06 TL, had AEM CAI, UR pulley, TB/IM spacers, Eshift pro-cats, comptech exhaust

when driving calmly, i ALWAYS got >31mph on the parkway... one night, i made a 300 mile round trip to mohegan sun on a full tank of gas, and the light didnt even turn on. i got a solid, 33mpg on I-95 in connecticut doing 80mph. i was impressed

the same exact trip in my 08 TL-S, i got a solid 26mpg... so there is a noticeable difference in fuel consumption.. however, my judgements are based solely on the MID information
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Old Feb 17, 2008 | 11:51 AM
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In city driving I consistently get 13-14MPG. Haven't taken long highway trips yet. I recently changed oil and air filters, and have no performance mods on the car yet (just got it a month ago, post-lease 05 A/T). I think I take it easy on the gas pedal, but I do drive in Brooklyn which might explain things a bit, but 13MPG still... Is this normal? Is there anything my mechanic could check/change to improve my mileage?

Would appreciate any input on this matter.
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Old Feb 21, 2008 | 10:57 AM
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Guys don't forget for us northerners....Gasoline doesn't vaporize readily at very cold temperatures. So oil companies formulate fuel differently for cold-weather markets in the winter. Unfortunately, the changes that provide better cold vaporization characteristics also result in less available energy for combustion. You won't get as far on a gallon of winter gas as you will on a gallon of summer gas.
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Old Feb 21, 2008 | 12:12 PM
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whoa some you guys are bad, i get like 370 on around 14 gallons, haha but I don't have CAI to listen to
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Old Feb 23, 2008 | 09:37 PM
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I did the K&N drop in air filter to my 08 TL Type S..........I think it helped in throttle response and about 1 MPG city and maybe, maybe 2 MPG highway. My car is still pretty new, but my Trip Computer shows 30 - 31 MPG highway cruising at 70mph. Before it was 28- 29 MPG.
**City driving is a whole different thing........the Type S is a HEAVY car with a BIG motor. I get about 16 - 17 MPG usually in CITY driving (NO LEAD FOOT).
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Old Mar 27, 2008 | 03:57 PM
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I have Fujita CAI installed and ever since then I get anywhere btwn 11-13mpg reads on the MID while driving locally. Highway is around mind 20's to 30's.

is it because it's taking in more air hence dumping more fuel to make it go?
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Old Mar 27, 2008 | 06:46 PM
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Good to know others are getting improved economy with CAI.

I will get 31-32 mpg, and even up to 33 mpg on straight, open highways @ 65-70 mph. Stop'n go & city traffic dings it to the low 20's.

I'm driving an '06 AT w. AEM CAI, OUTLAW ENG. spacers, & GREDDY EVO2. Also, I use 91 octane, as the best available here in So Cal (Riverside).
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Old Mar 28, 2008 | 08:13 AM
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My mid was showing 18mpg before CAI
After install of Fujita CAI is now showing 22/21 mpg.
I do alot of NYC driving!! as we all know is not the best in the world. ( LIE, CROSS island, Cross BX xpwy)
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Old Mar 29, 2008 | 03:20 PM
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I've sustained my 22mpg in Chicago driving after my intake mod. Some people said it goes back to normal, but I completely disagree with that. I'll get 32-33 on the highway.
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Old Mar 29, 2008 | 05:31 PM
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I just drove from Dallas to Austin ~225 miles and was getting 34mpg. I just installed an AEM CAI a couple weeks ago. I think if I had driven further I would have eventually hit 35mpg.
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Old Mar 29, 2008 | 06:40 PM
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Originally Posted by l @ z y a l b a
I have Fujita CAI installed and ever since then I get anywhere btwn 11-13mpg reads on the MID while driving locally. Highway is around mind 20's to 30's.

is it because it's taking in more air hence dumping more fuel to make it go?

um shouldnt be, I just installed a Fujita CAI and get the same gas mileage i did before, are you possibly driving the car harder then before?
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Old Mar 29, 2008 | 09:50 PM
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Originally Posted by l @ z y a l b a
I have Fujita CAI installed and ever since then I get anywhere btwn 11-13mpg reads on the MID while driving locally. Highway is around mind 20's to 30's.

is it because it's taking in more air hence dumping more fuel to make it go?
11-13? Something is not right, either with the car itself or possibly the MID.
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Old Mar 31, 2008 | 11:07 PM
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Originally Posted by Fuser82
Guys don't forget for us northerners....Gasoline doesn't vaporize readily at very cold temperatures. So oil companies formulate fuel differently for cold-weather markets in the winter. Unfortunately, the changes that provide better cold vaporization characteristics also result in less available energy for combustion. You won't get as far on a gallon of winter gas as you will on a gallon of summer gas.

Also, we need to let our cars idle in order to warm up the engine and cabin..
This burns gas while moving nowhere..
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Old Apr 29, 2008 | 11:21 PM
  #32  
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i get a solid 22 mpg in my 05 5at tl mostly city. no intake yet. gonna install it tomorrow and we'll see what that does. but i hear that an intake will only make mpg better.
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Old Apr 30, 2008 | 09:49 AM
  #33  
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Have a Fujita CAI
Pre Intake - 21/22 mixed chicago driving and highway
Post Intake - 23 with the same driving conditions
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Old Apr 30, 2008 | 04:26 PM
  #34  
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If the intake is sucking in colder air (and/or more air), and the engine is producing more power as a result, then for a given air-fuel ratio it will use more gas and therefore gas mileage should go down. That is the most fundamental notion of a gasoline engine. There is no such thing as "free" horsepower.

Also, the ECU, airflow sensor, and oxygen sensors work together to adjust the fuel mixture for operating performance and emissions. When you change the airflow, the computer is compensating. The ECU may also retard the timing to compensate for unusual airflow parameters that may affect emissions, which may increase or decrease gas mileage slightly.

Finally, if the CAI is not wrapped and transferring ambient air to the intake air then you will likely get better mileage because the mixture leans out to compensate. In that case, you would get better gas mileage and less horsepower. Mine is wrapped and maybe that is why there is no perceptible difference in gas mileage.

To increase gas mileage, you would need to increase engine efficiency (less friction or internal rotating mass), lower drag or weight of the car, increase driveline efficiency, or reduce rolling resistance from tires. You could also reprogram your ECU to lean out the mixture, which if it is not optimally set based on your mods, may increase power while lowering gas mileage.

I have had my CAI for about 1,000 miles and if anything my mileage has dropped very slightly (and no I do not drive it harder to hear the noise). I get about 30 MPG highway averaging 75 MPH and 19 MPG city. Before the CAI it was closer to 20 MPG city and the highway has remained the same.
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Old May 6, 2008 | 04:18 PM
  #35  
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a solid 25+ mpg no led foot in city traffic. 33+ highway
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