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Old October 13th, 2008, 04:52 PM   #1
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decrease in fuel range after intake install

Hi everyone. I recently got an AEM V2 installed on my car. The car performs a bit better, and has that amazing tone when floor it. However, I realized that after putting a full tank of gas, I'm only getting around 380KM. Is this because of the intake or because of my bad driving habits. I've floored the car maybe 3 times over the past 1 week.
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Old October 13th, 2008, 05:13 PM   #2
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It's probably a combination of you driving more aggressive and the ECU needing time to readjust after the install.
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Old October 13th, 2008, 05:16 PM   #3
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reset the ecu and drive slowly for a while. i know for me first time I got it i was vtec ing all day all night
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Old October 13th, 2008, 05:23 PM   #4
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how would i go about in reseting the ecu? still a noobie in a sense
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Old October 13th, 2008, 05:57 PM   #5
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Quote:
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reset the ecu and drive slowly for a while. i know for me first time I got it i was vtec ing all day all night
ive had mine installed for a few days now and I do a lot of interstate commuting to work...all it is is vtec here, vtec there just to hear the growl. Im sure ill calm down in a week or so, but it hasnt worn off yet.
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Old October 13th, 2008, 06:12 PM   #6
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It's the WOT effect. You enjoy the sound and power of your new mod so you drive Wide Open Throttle a lot. Technically your gas mileage will improve while cruising. An engine is basically a big air pump and so installing a more efficient intake allows the engine to breathe easier. Therefore it takes less to do the same job, thus improving your MPG.
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Old October 13th, 2008, 06:17 PM   #7
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unplug the battery for a few mins. Comeback and plug it back in. Make sure you have the radio code if you have a 6cd or a navi. Or else its going to be a long drive to honda. LOL I learn that the hard way. Unplug on a sunday and they close early. blah...
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Old October 13th, 2008, 06:28 PM   #8
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thanks for the input. ill unplug the battery for some time and try to not drive hard. its just so tempting.
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Old October 16th, 2008, 08:49 PM   #9
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Quote:
Originally Posted by Excelerate View Post
It's the WOT effect. You enjoy the sound and power of your new mod so you drive Wide Open Throttle a lot. Technically your gas mileage will improve while cruising. An engine is basically a big air pump and so installing a more efficient intake allows the engine to breathe easier. Therefore it takes less to do the same job, thus improving your MPG.
You said that it will increase my gas mileage during cruising. What about city driving. Because I just filled up the car the other day, and drove almost 160KM and its in the middle of 1/2 to 3/4 tank full. This is really bothering me. I just reset the ecu today by disconnecting the negative terminal from the battery for 1-2 minutes.
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Old October 16th, 2008, 08:57 PM   #10
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It will usually take more than 1-2 minutes to reset everything, but I have seen great improvements in MPG's with my V2 right from the start. Even with the WOT effect when first installed it the car got better MPG than it did with the stock intake....
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Old October 16th, 2008, 10:39 PM   #11
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even with the WOT ehhh....ill just leave the battery unplugged for 5-10 minutes tomorrow. I dont want to see that intake being sold if I dont get the mileage back up again.
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Old October 22nd, 2008, 01:53 PM   #12
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could the change in weather also affect the fuel economy?
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Old October 22nd, 2008, 01:55 PM   #13
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Quote:
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could the change in weather also affect the fuel economy?
Of course, due to both the different blending of the winter fuel and the temperature. There is plenty of info on that on this board and elswhere on the web.
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Old October 24th, 2008, 06:36 PM   #14
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just wanted to thank everyone for their input....im seeing a difference in fuel range....keep up the great work
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Old October 24th, 2008, 09:16 PM   #15
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i was able to put 210klicks from full to half with my v2. Actually its at 250km from fill to half right now

Last edited by 04simple_accord; October 25th, 2008 at 12:09 PM..
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Old October 25th, 2008, 11:43 AM   #16
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17MPG, mixed. Crap.
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Old October 26th, 2008, 10:28 AM   #17
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I'm still getting easy 29-31 mpg mixed.

25 on the weeks I take it to the track.
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Old October 26th, 2008, 10:37 AM   #18
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My average mpg per tank is always right about 25-26 and I do almost 100% highway except for some country roads on the way to the highway. My car is all stock and has a BRAND new engine. V6 auto BTW. My old motor got the exact same mpg's
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Old October 26th, 2008, 11:43 AM   #19
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i've got a v6 6 speed with pretty much all the bolt ons, including the UR underdrive pulley so I'd imagine those bolt ons help with not only performance, but MPG too due to weight reduction and better flow.
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Old October 27th, 2008, 09:47 AM   #20
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My injen CAI really helped increase my mileage. I just got 26.9MPG all city driving with I/E.
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Old October 27th, 2008, 09:56 AM   #21
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i've got a v6 6 speed with pretty much all the bolt ons, including the UR underdrive pulley so I'd imagine those bolt ons help with not only performance, but MPG too due to weight reduction and better flow.
What are the usual bolt ons?
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Old October 27th, 2008, 10:13 AM   #22
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Full exhaust (richie's test pipe/j pipe/ Borla catback with resonator and pre muffler removed), AEM V2 CAI, UR underdrive pulley... don't really know what other bolt ons there are for our cars... that's all i got.
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Old October 27th, 2008, 11:36 PM   #23
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intake, header, exhaust are the most popular bolt ons.
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Old October 28th, 2008, 07:06 AM   #24
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Intake - check
exhaust - check
headers - better look what section of the forum you're posting in... we can't get headers for our car...
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Old October 28th, 2008, 09:05 AM   #25
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so an exhaust can also help improve mpg?
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Old October 28th, 2008, 09:54 AM   #26
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so an exhaust can also help improve mpg?

Yes I believe so.
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Old October 28th, 2008, 10:40 AM   #27
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Lots of things can help gas mileage. If the engine can breathe better (intake) and exhale (exhaust) more efficiently, it will run smoother, and have a possible increase in fuel efficiency. The typical downside, however, is more power. More power = more putting your foot in the gas, which in turn, causes your MPG to decrease. So all of the bolt ons make your engine more efficient, run better, have more power, which can lead to an increase in fuel efficiency, but the driver tends to drive the car quicker. Bye bye gas mileage.

I can get consistent low 30's mixed driving (majority highway) or I can get mid to low 20s when I drive the car hard. It can really go either way.
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Old October 28th, 2008, 11:43 AM   #28
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Quote:
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The typical downside, however, is more power. More power = more putting your foot in the gas, which in turn, causes your MPG to decrease, but the driver tends to drive the car quicker. Bye bye gas mileage.
QFT... Its a sad punishment, but well worth it.
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Old October 28th, 2008, 06:48 PM   #29
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Full exhaust (richie's test pipe/j pipe/ Borla catback with resonator and pre muffler removed), AEM V2 CAI, UR underdrive pulley... don't really know what other bolt ons there are for our cars... that's all i got.

Quick question about your UR underdrive pulley. Is this the same as a crank pulley and if so UR's website has two, one is more expensive. Do you know the difference?
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Old October 28th, 2008, 06:59 PM   #30
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There are two pulleys listed on UR's website, yes. However, one is the underdrive pulley and one is the stock diameter pulley. Yes, I am referring to the crank pulleys. They both weigh 1.0 lb according to their site, but my scale put it at 14.6oz.... compared to the stock one, which is setting on my desk as I type this.... it's heavy as hell.

Good upgrade.

Here's the underdrive pulley:

http://www.unorthodoxracing.com/Item...rtID=020611402
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