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07-05-2013, 02:13 AM | #4476 | |
Scooby Specialist
Member#: 329526
Join Date: Aug 2012
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SWIC
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Vehicle:2013 Impreza Spt cvt Silver |
You are still confused.
Quote:
Just try the simple experiment, without your increasing/decreasing speed variability which makes absolutely no sense in this discussion. Just set your cruise control and check your mpg in different gears at the same speed under the same conditions. That's all.
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Last edited by stevehnm; 07-05-2013 at 02:32 AM. |
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07-05-2013, 08:33 AM | #4477 | |
Scooby Specialist
Member#: 354284
Join Date: Apr 2013
Location: Midwest
Vehicle:2013 Imp Sport CVT SWP |
Quote:
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07-05-2013, 09:26 AM | #4478 |
Scooby Newbie
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Join Date: Jun 2012
Chapter/Region:
Tri-State
Location: New York, NY
Vehicle:2013 Impreza Sport |
@myrt1987 Have you done the hand calculation for these? How does it translate in relation to what the OBC says? Mine is usually off by 1 to 2 MPG but the closer to empty I get in a tank, the more accurate it is. My OBC has been spot on a couple of times. Also, what percentage of your commute is highway? I have no problem matching the 36 MPGs/Highway in my commute, but the city driving really takes a toll on these cars. I consistently average 30 to 33 MPGs hand calculated. |
07-05-2013, 09:32 AM | #4479 |
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NESIC
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Vehicle:2017 Legacy Limited White |
Sorry,
Stevenhnm has already proven your numbers are all mathematically impossible in normal driving with a CVT, therefore, it must mean your dash display, photos, and gasoline bill have all been photoshopped. Or do you only drive it downhill on Sundays at 40 mph? |
07-05-2013, 11:21 AM | #4480 |
Scooby Specialist
Member#: 329526
Join Date: Aug 2012
Chapter/Region:
SWIC
Location: Ground Control
Vehicle:2013 Impreza Spt cvt Silver |
LOL. Good Comeback (not).
Thanks, but I'll pass on your kind of friends. Your daddy buy you your vette, or were you "working" for him and that's how you bought it? You might try a community college: Go for logic 101, statistics 101, etc. |
07-05-2013, 11:23 AM | #4481 | |
Scooby Specialist
Member#: 329526
Join Date: Aug 2012
Chapter/Region:
SWIC
Location: Ground Control
Vehicle:2013 Impreza Spt cvt Silver |
Quote:
P.S. Zeeper talk to G2 - maybe you two can help each other in those basic logic and math classes. |
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07-05-2013, 11:39 AM | #4482 |
Scooby Specialist
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Join Date: Oct 2011
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NESIC
Location: Upstate NY
Vehicle:2017 Legacy Limited White |
Love how your math is so good that you switch over to argumentum ad hominem instantly.
The refuge of a weak mind, you seem very comfortable with it. Now how's about you show us again your "math", proving:
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07-05-2013, 12:29 PM | #4483 | |
Scooby Specialist
Member#: 354284
Join Date: Apr 2013
Location: Midwest
Vehicle:2013 Imp Sport CVT SWP |
Quote:
I'm 40, have 2 degrees, 3 businesses currently that I started from scratch. I've sold a couple I started before I was 25. I'm married to a woman, have 2 kids that have learned respect at an early age and both are in gifted classes in school. I was pre-med, then became a physical therapist before I started my first business developing technologies enabling persons with disabilities to be more independent. The newest business will go public soon. You want me to go on and on? I've made lots of money so far. However, I don't like to flaunt it. Money is an evil necessity, and one I dont like to focus much on. I have accountants that handle that for me. I havnt even mentioned the nicer cars I have. Like I said before, my favorite thus far is my scoobie. Nobody presumes anything about me driving it, and I adore the little car. Then there are people like you- who are single handily giving this forum a bad name. It's a shame that others on here have to be exposed to your posts and rants. Your missing something in your life, and I hope you find it some day. But, hopefully its after you've been removed from this forum too. Last edited by G2Spfld; 07-05-2013 at 12:48 PM. |
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07-05-2013, 03:32 PM | #4484 |
Scooby Newbie
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Join Date: Feb 2013
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2012 sport premium 2.0i I average about 27 most highwayabout what I got with my previous foresters if you want mpg don't get it high speed(80) with kayaks ( creek boat or two) from md to wv I usually average 19 ish. I HATE THIS CAR it is hands down the worst Subaru I have ever owned
94 legeacy 2.2l front wheel 99 forester 03 forester 01 forester I am going to get rid of it nosy as hell on the road underpowered and aneamic driving poor seats terrible blue tooth can hear probably because the radio sucks and I have to take 3 minutes to repair it to my phone ever time I start up the car |
07-05-2013, 05:04 PM | #4485 | |
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Member#: 329526
Join Date: Aug 2012
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Vehicle:2013 Impreza Spt cvt Silver |
Quote:
Sorry if you think injecting reality into a forum is "giving it a bad name". I disagree. I wasn't aware Kumbaya was in the forum title. I don't think by honestly bringing up the mpg problem with the CVT I am giving it a bad name. In fact, I think the continued attacks by a very few here on those who bring up their concerns is what is giving it a bad name, driving away honest people with legitimate gripes that Subaru should be addressing. I also am not "single handily" (sic) giving this forum a bad name. I think those attackers I mentioned a couple of sentences back are the vocal minority doing that. |
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07-05-2013, 06:08 PM | #4486 | |
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Member#: 354284
Join Date: Apr 2013
Location: Midwest
Vehicle:2013 Imp Sport CVT SWP |
Quote:
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07-06-2013, 12:22 AM | #4487 | |
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MAIC
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Vehicle:2018 WRX Pure der |
Quote:
Its probably about 75% highway for 3.5 hours a day. Its not about driving slow as much as just efficient driving. Like long coasts to red lights, steady acceleration, limiting the use of the brake pedal, etc. |
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07-06-2013, 03:01 PM | #4488 |
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Vehicle:2013 Impreza Spt cvt Silver |
I still don't think you get it. rpm and mpg are negatively correlated. rpm and fuel consumption rate are positively (or in your language, "directly") correlated.
Last edited by stevehnm; 07-06-2013 at 03:08 PM. |
07-06-2013, 04:03 PM | #4489 | |
Scooby Specialist
Member#: 354284
Join Date: Apr 2013
Location: Midwest
Vehicle:2013 Imp Sport CVT SWP |
Quote:
X= RPM Y= MPG Negative correlation would be: X+1 = Y-1 Positive correlation as you described above: X=RPM Y= Fuel consumption X+1=Y+1 "1" is for explanation only, it could be any number for explanation purposes You derive this subjectively, which for an engineer ( if that's what you are, I'm just guessing) is kind of a reach. Your data acquisition is putting your car on cruise and watching the instant mpg readout as you vary the gears. I'm taking this info from your posts as you wrote them. Lets review what I said initially- " there is not necessarily a direct correlation between RPM and MPG". You found fault with that, then agreed with it, then faulted it again explaining that I don't know what in talking about, among other things like me being uneducated, my daddy bought my vette, etc. My point is this, there is not a direct correlation positive or negative between rpm and mpg. Yes, they are related, however watching the readout and shifting gears hardly qualifies as any basis for argument. The computer in the car ( ECU if your not following) reads sensors, and makes calculations. It reads TPS ( throttle position sensor) to read the direct input we give it. Our expectation of it if you will. Like I said earlier, I can rev the engine up and TPS read 10-15% without much load and injector pulses et al are less than 2500 RPM for instance, at TPS reading WOT. In fact, at the bottom end I load it up much more, much quicker to help spool up turbo and get the car going. There are many factors involved with the mapping, not just rpm and mpg, which I know you understand that. Either you don't understand, or don't think I do, so you continue to draw direct correlations where there are none. Maybe you can replicate it per your example, however you agree the mpg avg indicator is less than accurate, so its a little odd you base this off of the same system. Per your definition, one would never worry about lean or rich conditions. If the rpm increases, then the fuel burn increases positively, as rpm increases mpg is negatively correlated. If you drive the car hard at higher TPS readings then the only correlation is mpg will suffer. That wasn't the point. You can increase rpm with less TPS readings and not have a big negative impact of mpg. If you still don't understand that, build yourself a car with a stand alone EMS and generate your own maps. Most people who arnt familiar with this will not understand I guess, I didn't until I learned from my engine builder. It gets much more involved than I even described, ambient air temp, etc, etc, etc. |
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07-06-2013, 06:41 PM | #4490 |
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Vehicle:2012 2.0i Sport 5MT DGM |
Wait, what turbo?
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07-06-2013, 07:45 PM | #4491 |
Scooby Specialist
Member#: 354284
Join Date: Apr 2013
Location: Midwest
Vehicle:2013 Imp Sport CVT SWP |
My other cars are turbo cars. Those have stand alone ECUs. Turbo or not, basically the same just without having to worry about boost. Obviously these imprezas are not like the WRX or sti versions where you do have open tuning capabilities, however limited they might be. I havnt looked at a Subaru WRX or sti map yet, so I'm not sure what variables are available to tune. I know in other threads on this forum you will find this info. I use Autronic and AEM ECU's in a few of my cars. They are pretty much 100% tune from scratch.
Last edited by G2Spfld; 07-06-2013 at 08:18 PM. |
07-07-2013, 08:42 PM | #4492 |
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Vehicle:2012 2.0i Marine Blue Pearl |
How did you get the digital gauge (the one with fuel left and mileage) to be black with white lettering/symbols? Is it just that way on the sport? If so, seems stupid... why would subaru change something that little?
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07-07-2013, 09:01 PM | #4493 |
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Thats the way it came. Its not a sport, its a limited sedan.
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07-08-2013, 10:54 AM | #4494 |
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Location: Mountlake Terrace, WA
Vehicle:2013 Sport Prem. MT Dark Grey Metallic |
I filled up in Lynden, WA on the way up and again in Princeton for the return trip, and my MPGs came out at 32.7. This included the "around town" bits too. I'm liking the results, seeing as the trip from Hope to Princeton is very hilly. I haven't filled up since I got home so I don't know what the return trip was like.
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07-13-2013, 02:28 PM | #4495 |
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Vehicle:2012 2.0i Sport 5MT DGM |
Just did 1746 miles and averaged 30.8 for the trip. All highway at 75mph except 200 around wichita lots of idling and 100+f temps, that tank was 24.8
I'm pleased |
07-14-2013, 09:03 AM | #4496 |
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South East
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Vehicle:2012 Imp. Sp. Ltd. Blue/Silver |
Latest fillup was pretty disappointing. Trip indicated 29.4, actual was 26.8. I've never had that big of a gap before.
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07-14-2013, 09:10 AM | #4497 |
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Anything different in your driving routine?
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07-14-2013, 12:01 PM | #4498 | |
Scooby Specialist
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Join Date: Oct 2011
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Vehicle:2017 Legacy Limited White |
Quote:
So this one might have been worse than normal, while the previous seemed better than normal, just because of when the gas pump shut off. At least consider the possibility... |
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07-14-2013, 08:08 PM | #4499 |
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Vehicle:2012 Imp. Sp. Ltd. Blue/Silver |
Part of the tank was a return leg of a beach trip last weekend. 120 miles at 75mph. The rest was typical commute. It was originally getting between 1 and 1.5 mpg optimistic. Seems to be edging up over time.
http://www.fuelly.com/driver/hemophilic/impreza |
07-15-2013, 02:16 PM | #4500 |
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Vehicle:2015 Taco & 2015 Legacy Ltd. |
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