Hi

There was a bug in an older version (make sure you are on the latest version that is only distributed from the Android Market) that caused the averages not to reset properly on a new trip, but this has been fixed

It's normal for it to read very high (on the new calculation) if you have just started, it should then settle down as you start driving (as this is an average based on fuel/distance, if you use no fuel whilst travelling when you first start, it will be a very big number to start with)

Im finding the problem with TRIP AVG MPG and LONG TERM AVERAGE MPG remains.

The most accurate is instant MPG.

I drove on the motorway today and trip average mpg said i got 366mpg.. this is wrong. Im assuming the trip cost and fuel used dials would be incorrect because the trip average mpg is reporting high figures.

also notice that accumulated driving distance stays on 1.

Hi Ian,
I am new to torque, only had it a month and find it is very cool. I found something interesting with mpg just today. I had set up a page of gauges for mpg that gave me similar info like when I used scangauge which also reads the ecu but was a wired device. My daily trip is 32 miles and I know how much fuel the car uses and mpg. The first day I used Torque for mpg readings it was accurate then the next few days it was swinging and not correlating to what it should. I realized that the first day I did not hit log trip. I noticed on my LG Optimus Q Straight Talk as soon as I choose the vehicle and start up the gauges or map Torque will be working until I turn it off. The last two days I actually hit "start logging" and the mpg, fuel amount used was not realistic. After 2 days and four trips today I just started by choosing the gauges wothout "start logging" and the miles and fuel used was normal again!
My phone has/runs Gingerbread 2.34 and use the cheap Ebay Elm 327. My cars are mainly GM's. 2000 Olds Alero, 2003 Silverado, 2006 Chevy Trailblazer.

Thanks for the program and your efforts in bettering this great app.

Carlos

Hi

At the end of your trip, can you go to the 'Adapter Status' screen and check the value for 'Error Count'. It should always be 0, the problems you sound like there are very close to what a faulty adapter can produce (the logging may ask for a PID that the adapter can't receive/understand correctly triggering this issue)

I'll also need to know the fuel type, if you have 'enhanced calculation' enabled in the settings, and if you have a MAP or MAF sensor (mass airflow or manifold pressure)

and what PIDs you were logging (so I can double-check just in case)

Hi Ian,

When I un-check the enhanced mpg option the readings appear to be more meaningful.

I would still like to use the enhanced option but i think its broken somewhere.

I received no errors with the device when checking the adapter status.

Regards
PD24

Quote from admin on February 24, 2012
Hi

At the end of your trip, can you go to the 'Adapter Status' screen and check the value for 'Error Count'. It should always be 0, the problems you sound like there are very close to what a faulty adapter can produce (the logging may ask for a PID that the adapter can't receive/understand correctly triggering this issue)

I'll also need to know the fuel type, if you have 'enhanced calculation' enabled in the settings, and if you have a MAP or MAF sensor (mass airflow or manifold pressure)

and what PIDs you were logging (so I can double-check just in case)

I will double check on the way home but my trip in was fine again by not "start logging". I did notice like you said when the when mpg numbers are off the it's because I would start logging and the fault cell count goes up and I get a ghosted faulty sensor on the side of the screen. However when I do not ask it to start logging I get not faults and it will still have a log at the end of the trip.
Is there 2 different logs available?
Is there an enhanced log when I ask it to "start logging" then when I don't?

Thanks

Carlos

Quote from admin on February 24, 2012
Hi

At the end of your trip, can you go to the 'Adapter Status' screen and check the value for 'Error Count'. It should always be 0, the problems you sound like there are very close to what a faulty adapter can produce (the logging may ask for a PID that the adapter can't receive/understand correctly triggering this issue)

I'll also need to know the fuel type, if you have 'enhanced calculation' enabled in the settings, and if you have a MAP or MAF sensor (mass airflow or manifold pressure)

and what PIDs you were logging (so I can double-check just in case)

0 error counts when I did not ask logging to start.

I am using regular gas which has 10% ethanol in it, but I don't see how that should make any difference, please explain.

Its a 2000 Olds Alero, no MAF, yes it has MAP sensor.
The 2006 Chevy Trailblazer same fuel, has MAF and MAP sensor.
I do have a 2002 Corvette (not on the road during winter) that I have tuned to run E85 (85% ethanol) and when running higher amounts of ethanol it does affect the mpg on the factory mpg sensor probably due to the viscosity difference between ethanol and gasoline.
Should I try enhanced mpg?
Also if I did switch to a more expensive unit would these issues go away?

Thanks

Carlos

Hi!

What is the error count value when logging is enabled after a trip?

The ethanol makes a difference as it alters the fuel-air ratio of the fuel being burnt.

Enhanced MPG uses a different calculation, so it would be interesting if you notice anything different whilst using this option enabled.

The issues might not go away if you go to a more expensive unit (this is why I have asked for the error counts as that is what I'm trying to rule out :-))

Regards

Ian

Quote from admin on February 25, 2012
Hi!

What is the error count value when logging is enabled after a trip?

The ethanol makes a difference as it alters the fuel-air ratio of the fuel being burnt.

Enhanced MPG uses a different calculation, so it would be interesting if you notice anything different whilst using this option enabled.

The issues might not go away if you go to a more expensive unit (this is why I have asked for the error counts as that is what I'm trying to rule out :-))

Regards

Ian

I will make a trip in the logging mode and make a point of noting it. I do remember in one trip at one point looking at and it said 36 but never noted the final count.
I will try the enhanced in a while but I would hate to change too many things at once and loose the opportunity of not know what issue is causing the issues.
I realize the ethanol lowers the afr but that in itself should not cause software faults because the software is only reporting what information the ecu provides. With 10% ethanol the stochiometric AFR is lowered to ~14.13 compared to ~14.68 for gasoline. The afr the ecu has in its programing provides a base level volume along with the fuel map but even if its off it should not be a source for reporting errors. AFR is not static as it is constantly changing during various load and fueling conditions. I am not a software guy but it would appear to me that maybe a reporting mode might be causing a comunication issue with the bluetooth.
Examples would be I set up a screen with rpm, LTFT, STFT, timing advance, load and KR. I have my cruise fueling set up to run leaner for mpg but I don't get errors with HP Tuners, scangauge or your software if I get some KR on hills in cruising range the software only reports the kr. In Torque the errors come in when I asked it to log.
Another example is I also set up a screen for trips including trip time, trip mileage, odometer, ecu speed, gps speed, and speed difference. If I am showing a temporary difference between the speeds I don't get a software error even though the difference in speed meter is reporting a difference in speed. Similar with fuel solutions and ecu calibrations. When I was tuning the vette for e85 I tried different formulations along the way and logging can display a difference in the way the engine is running but not an error. The opposite can also be true where the engine will not be running as well with a particular tune but the software will not report an error, the engine just does not perform as well.
Hope this helps and again Torque is very cool and I will continue to provide feedback so it becomes even cooler!

Carlos

Here is what I found this weekend so far. If it makes any difference I had set program to start on dashboard on Saturday. On the Trailblazer on short trips I got like 3 errors and other faults. On the Alero it seemed OK until this mornings trip, when I realized the long term mpg had not changed .1 up or down all weekend city or highway. I appears the fuel per gal. being used seems about right, the instant mpg seems to react fine and in the same range as when I used the other plug ins. I went and checked the adapter status and it showed 1 error, and 3 other faults (did not change to end of trip). 2/3 of the way checked again and the gals used where not moving so I decided to reset the trips and it started moving again along with the long term which of course started high because I was on the highway.
When the software is working the mpg numbers reported (instant and trip are similar to scangauge, with advantage to Torque due to retaining the average longterm. Both are similarly a little high compared to actual miles driven between fillups. Again advantage to Torque because I will be able to adjust that where my older scangauge does not allow that. There is a difference in ecu's and the 2006 Trailblazer scangauge would have issues even though the unit will not report errors or faults it just would not work correctly. It would work fine on the 2003 Silverado and the Alero.
I will leave the start on dashboard off on the way home and tomorrow will drive the Silverado and see it the issues are there as well.
For now what appears to be happening is whatever is making the faults appear is affecting gals used, long term MPG and fuel cost. The instant mpg and instant fuel gals being used seems to work OK.
BTW I hope you dont mind my referencing scangauge often but its what I have been using for 4-5 years so I am familiar with it and it is a ecu plug in via wire with hardware. It is not a performance unit just does trips, mpg, obd2 code reader. They have newer units but I am not familiar with them. I also have used Autoxray and HP Tuners in diagnosing and ecu tuning on these vehicles.
Hope this helps you.

Thanks

Carlos

Does this mean our Enhanced MPG figures will be fixed?

"* Amendments to the CO2 calculation"

Hi!

The CO2 was slightly affected by a bug in the enhanced calc which caused it to read 29.3 in some situations where it should read 0, which is now fixed (pending sending out the update). I'm still to look at some of the other issues, but another poster has reported they have found faulty MAF sensors on 2 vehicles they were using (which will affect the MPG readout). I'm fairly confident the calculation is spot on (with the exception where it is not working at all, on one paticular make of vehicle)

The errors reported by the other poster, can affect the MPG calculation as at that point the adapter can do strange things. The app does try to cope with these conditions but on very bad adapters it can cause erroneous readings (the adapters should work properly and the Error counts should always be '0', even with 'faster communications' enabled)

Hi, sorry it's been a while since I updated with some info.
I took a ~1700 mile trip with the Trailblazer and it was error free through the trip. The mpg figure was off a little from the the factory computer but and I was honing it in closer as the trip ended. I realized that the manual adjustment (fudge factor) was not getting where I wanted to be. I realized that one factor that can be a variable vehicle to vehicle that can be adjusted to hone in efficiency is the volumetric efficiency. In looking average VE it appears that it can vary quite a bit and if one considers mechaical condition, differences in air inductions, exhaust, etc. Some vehicles can be as low as 75% VE.
I have been playing with the VE on the Alero and even a 1-2% it makes a big difference.

Ian,

everything seems to be working fine in the latest update apart from MPG Long Term Average.. i am still in the 300's... It is going down (do i need to give it some more trips to normalise?)

I do notice that on my car profile the accumulated distance remains on 1. Is this a fault??

Hi

I'll have a look at the accumulated distance to see if I can reproduce the issue you've had - it's increasing here so should be working for you as well

The long term average may need resetting - go to the display, press-and-hold and then hit 'reset' from the menu, which should reset it, and/or choose the 'reset trip counters' from the menu after pressing the menu button as well. The long term average stores the values in vehicle profile so if these were 'off' in a previous version, will need resetting

Ian sent you the debug log... did you get it? and emailed you.
regards

Hi

It looks like it just needs the long term averages resetting (as the total fuel / distance would be off from one of the previous versions)

I did notice that the adapter timed out in the debug file you sent but it recovered. If the error count is higher than 1 after a long trip then it's possible that it could cause an issue, however in the debug here it should be fine.

I'm going to have a quick run over the MPG long term average function this weekend to double check if there is any further problems (the new debugs give me a list of sensors in the engine available so I can follow things through better) but for the moment, it looks like it just needs the gauge resetting/zero'ing

i have reset the dial...

is it worth me uninstalling the app and reinstalling it?
I think i turned the engine off when i could get into wifi distance of my house..