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Old 05-07-2012, 05:03 PM   #401
gordyzero
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With the first factory tune, the trip computer would respond quickly with driving style. Obviously becoming more accurate as miles go bye. But with this tune , its holding tight @ 20 MPG regardless of how I drive it . Odd and noteworthy.
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Old 05-07-2012, 07:54 PM   #402
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Quote:
Originally Posted by gordyzero View Post
I even took a picture of the MPG meter because no one believed me. 35.3 the actual average was just over 30.5 sometimes 31. It wasn't easy or fun but a great way to sip fuel on the commute to work secondary roads average speed 40 MPH 6th gear I mode Auto - diff. That mileage is definitely never happening again with this reflash.

Could this have something to do with how the cylinders look? The motor was never properly broken in?
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Old 05-07-2012, 08:06 PM   #403
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Quote:
Originally Posted by k mier

Could this have something to do with how the cylinders look? The motor was never properly broken in?
I broke it in like every other new Subaru I have had, by the book to the letter. Even dealer said The pistons were never in that block right. The car now feels great, stable idle ( thats a first ) but never coming ANY WHERE near the mileage I did before. I wonder if the Subaru Xtra S fluid could actually be partly due to this , real stupid ? Gotta put it out there though.
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Old 05-07-2012, 09:53 PM   #404
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Quote:
Originally Posted by gordyzero
With the first factory tune, the trip computer would respond quickly with driving style. Obviously becoming more accurate as miles go bye. But with this tune , its holding tight @ 20 MPG regardless of how I drive it . Odd and noteworthy.
Have you cleared your trip A or B? It's hard to effect the avg mpg if you have thousands of miles worth of data stored.
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Old 05-07-2012, 10:33 PM   #405
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Quote:
Originally Posted by Snow Drift

Have you cleared your trip A or B? It's hard to effect the avg mpg if you have thousands of miles worth of data stored.
Of course, trip a has been reset every 100 miles or so. Trip b 1000 miles or so. There is a .02 difference.
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Old 05-07-2012, 11:34 PM   #406
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Gordy, do you plan on analyzing your oil? I'm curious if the new tune is rich for safety, causing your lower mileage. A UOA might show high fuel dilution which would lower flashpoint and viscosity. Maybe the tech recommended 5W-40 because he knew a 5W-30 would be further weakened by fuel dilution.

Of course, this assumes the tech knew anything about your special tune . Regardless, still curious.
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Old 05-08-2012, 12:56 AM   #407
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Quote:
Originally Posted by kingme
Gordy, do you plan on analyzing your oil? I'm curious if the new tune is rich for safety, causing your lower mileage. A UOA might show high fuel dilution which would lower flashpoint and viscosity. Maybe the tech recommended 5W-40 because he knew a 5W-30 would be further weakened by fuel dilution.

Of course, this assumes the tech knew anything about your special tune . Regardless, still curious.
Oh yeah! I have my blackstone sample bottle sitting on the shelf. This Map has to be silly rich compared to the first. I had the cruise set this morning @ 73 MPH, 6th gear, Intelligent mode, I watched the meter drop 0.5 MPG in the A/C OFF , 62 35mile ride to work. For a total WHOPPING 20.1 MPG ... Nice !
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Old 05-08-2012, 12:58 AM   #408
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And before anyone asks, OEM tires, 36 PSI front and rear..
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Old 05-08-2012, 10:19 AM   #409
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And before anyone asks, OEM tires, 36 PSI front and rear..
Did you have a big breakfast?
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Old 05-08-2012, 01:45 PM   #410
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Did you have a big breakfast?
I literally lol'd there
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Old 05-09-2012, 02:42 AM   #411
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I'm glad your having fun with this, however ... no big breakfast. Just egg whites and black coffee. According to the doctors, I have a few years to walk. I have a future of surgery's and wheelchairs. I bought this car as a present to myself and a f.u. to the chick who left the almost cripple. But even I have to laugh out loud. Stupid car. No hard feelings. I do enjoy the feedback. 19.4 MPG with the a.c. on. What a joke. Not another d bag crying about my sports car's mileage. Just a other observation with my STI ownership so far.
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Old 05-09-2012, 09:28 AM   #412
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So get the hell of the computer and drive the god damn thing. You'll have plenty of time to bitch an moan when you are wheelchair ridden and ****ting in a pan.
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Old 05-09-2012, 10:45 AM   #413
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^ wow, guy!

Anyway, should I be concerned that I get the same mileage tooling around in my '12 regular WRX? 19.8-20.1 average here no matter what I do...
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Old 05-09-2012, 01:10 PM   #414
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Originally Posted by nightdown fox View Post
^ wow, guy!

Anyway, should I be concerned that I get the same mileage tooling around in my '12 regular WRX? 19.8-20.1 average here no matter what I do...
No, that is normal mileage .... Gordy was getting 35 mpg before his issues began, which is very odd.
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Old 05-09-2012, 01:47 PM   #415
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Originally Posted by GrumpyPitbull View Post
No, that is normal mileage .... Gordy was getting 35 mpg before his issues began, which is very odd.
I too would have to say that sort of mileage is sky high for an STI. The car is rated a 17/23. It's hard to fathom that his STI was seeing a 50% mpg increase over the EPA rating. I could believe 25mpg if he drove below 60mph, the road was very flat, the weather is warm (ie no significant cold starts), and there is minimal wind.

When I check my 2012 WRX's (1500 miles) true mpgs vs what the computer is saying, it's about a 0.5-0.8 difference (ie computer is more optimistic). Right now I'm seeing about 21-22mpg in combined driving (50 city/50 hwy). The area I live in Kansas City is hilly and very windy. Both have a significant impact on mpgs, especially wind at highway speeds. Constant 15-20mph winds can easily suck out 20% in highway mpg.
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Old 05-09-2012, 02:16 PM   #416
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Quote:
Originally Posted by gordyzero View Post
I'm glad your having fun with this, however ... no big breakfast. Just egg whites and black coffee. According to the doctors, I have a few years to walk. I have a future of surgery's and wheelchairs. I bought this car as a present to myself and a f.u. to the chick who left the almost cripple. But even I have to laugh out loud. Stupid car. No hard feelings. I do enjoy the feedback. 19.4 MPG with the a.c. on. What a joke. Not another d bag crying about my sports car's mileage. Just a other observation with my STI ownership so far.
I average 21-22mpg on the highway with the stock tune and 19-20mpg on the highway with cobb stage 2.

This is what a car like this will get... a clean dyno tune at the STOCK boost level should squeeze further mileage out of it.
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Old 05-23-2012, 04:21 AM   #417
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I bought my 2011 WRX in Austin Texas and drove it home to Vancouver BC, 2500 miles and averaged 22.2 MPG and that was all HWY driving with an average speed of 80mph
Since after adding a catless DP with a stage 2 tune I'm getting closer to 26mpg hwy and sometimes a little better, and 22 city.
I believe that if you don't launch these cars they won't break nearly as often... IMO.
Cheers!
MPH
Quote:
Originally Posted by VisBits View Post
I average 21-22mpg on the highway with the stock tune and 19-20mpg on the highway with cobb stage 2.

This is what a car like this will get... a clean dyno tune at the STOCK boost level should squeeze further mileage out of it.

Last edited by jege41; 05-23-2012 at 04:23 AM. Reason: spelling
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Old 05-23-2012, 12:40 PM   #418
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just picked up my 2011 sti, the stock tune is GARBAGE.. theres a huge dip in power around 5000 rpm, cobb stage 1 fixed that.. and as for that MPG thats insabne no matter what i do cruise control down to philly 22mpg trying to keep it under 80. around town 19-20.5
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Old 05-23-2012, 10:45 PM   #419
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you guys hear about the 2012 sti ecu update from subaru?
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Old 05-24-2012, 09:27 AM   #420
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you guys hear about the 2012 sti ecu update from subaru?
Why don't you enlighten us?
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Old 05-24-2012, 09:59 AM   #421
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Originally Posted by itsover9000 View Post

you guys hear about the 2012 sti ecu update from subaru?
Please give more information on this...
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Old 05-25-2012, 06:39 AM   #422
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Originally Posted by SWP n Gold View Post
Why don't you enlighten us?
Quote:
Originally Posted by WRXLTD View Post
Please give more information on this...
http://forums.nasioc.com/forums/show....php?t=2355375
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Old 08-04-2012, 01:55 AM   #423
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No, that is normal mileage .... Gordy was getting 35 mpg before his issues began, which is very odd.
A long awaited update. My car still gets 20 MPG. I have put nearly 5000 miles on it . And it still only pulls 20 MPG. No matter how I drive it. Before the " secret tune" from the cigarette smoking man. My car would some how pull nearly 35 MPG. Can you say stupid lean ? The biggest improvement is the steady idle. It would hunt and sometimes shake the idle would go so low. Doesn't seem to pull timing all the time under a load like it did with the original tune. But at times still does. I have been beating the car like the tech's told me too. So far,, delicious improvement.
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Old 08-04-2012, 11:07 AM   #424
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20-23 mpg sounds about right. I get average of 22. Once I tried hyper miling and got 38.7 mpg! Drafting and shutting motor off and going downhill. Won't try that again lol.
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Old 08-04-2012, 11:46 AM   #425
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A big misconception is that running very lean will return high mileage. That is false. The best mileage will be returned on the AF ratio that provides the most power output with the least fuel injected. Running lean lowers power and causes you to have to use more throttle to maintain speed. As a result of the extra throttle, More air is used along with more fuel.

Some tuners lower the Closed loop RPM or throttle positons to levels that are way to low. As a result, You guys drive around in open loop and that returns poor mileage. The correct settings should yield 23-25mg or so driving the car around 3500 rpm and staying out of boost. More on a highway trip using the cruise.
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