Computer box to adjust gas mileage?
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This is a discussion on Computer box to adjust gas mileage? within the Everyday Impreza Talk forums, part of the Community - Meet other Enthusiasts category; Someone a while back was showing me this thing they plug in under the dashboard of their STI which can ...

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    Cee
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    Computer box to adjust gas mileage?

    Someone a while back was showing me this thing they plug in under the dashboard of their STI which can adjust the cars computer. He said he can boost gas mileage upwards of 5 mpg. Does anyone know what this thing might have been, and if it's advised to use something like this? I'm getting a 2015 STI soon and I was considering getting something similar.

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    Subaru Newb MainFrame's Avatar
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    Maybe an Access Port? A good tune can improve your fuel economy (if you can keep your foot out of the gas).. but it's generally not a good idea to run an "economy" map.

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    Sammich Makin' Pwincess wrxtreme06's Avatar
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    There is an economy map on the Cobb access port which is a handheld device that plugs in to your obdII. I personally will never use this map because it limits your boost and acceleration which IMO is dangerous. I control my gas mileage with my right foot

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    Quote Originally Posted by wrxtreme06 View Post
    There is an economy map on the Cobb access port which is a handheld device that plugs in to your obdII. I personally will never use this map because it limits your boost and acceleration which IMO is dangerous. I control my gas mileage with my right foot
    Heh good point. I used to drive an old 5-speed Hyundai Accent. I got great gas mileage, way above what it was rated. I'm sure I could do the same after the initial "HOLY **** 300+ HP!!" wears off.

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    Registered User BOshea's Avatar
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    Like these guys have said... Its really based off your Right foot and Heart rate... LOL. I do a lot of "zippy" driving mainly around town and i average 21.3. So its how bad you want to boost to get good gas mileage...

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    Registered User ScottieRex's Avatar
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    WTF are you driving a WRX for if you're worried about gas mileage? Go get a Ford Focus or something.

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    He simply abides. SD_GR's Avatar
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    Let's keep open minds guys, the forum should welcome everyone and their views.

    I support any effort to decrease consumption.
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    Registered User cflip2x's Avatar
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    Well I got an Ultragae it doesn't adjust anything but is another monitor to help get more info I you were to try to hypermile
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    Subaru Newb MainFrame's Avatar
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    I've gotten as much as 32mpg averaged over an entire tank of mixed driving just by controlling my right foot.. no need for a special map.

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    Work In Progress GRBOXR's Avatar
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    ^I've seen 31mpg over an entire tank at one point as well. Just need to control yourself.

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    Registered User BaconRaygun's Avatar
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    Quote Originally Posted by ScottieRex View Post
    WTF are you driving a WRX for if you're worried about gas mileage? Go get a Ford Focus or something.
    Just because one drives a car with balls doesn't mean one must drive like he/she is on a racetrack every minute. Especially with a car like the WRX/STI where the difference between bad mileage and decent mileage depends solely your right foot... this isn't a Hummer where you are basically stuck with terrible mileage.

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    After I went TP stage 1, I hit a high of 34 mpg( no boost), but I average 27-30 on my 45 mile one way commute to work.

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