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Post Info TOPIC: Autotune and Data logging for ECU Editor


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Autotune and Data logging for ECU Editor


I have been working on engine logging functionality for ECU Editor. I am using the SDS connector to pull back the engine data and log to a file and I plan to see if the data is accurate and reliable enough to build a low cost auto tune feature into ECU Editor. 

The plan is to allow people to plug a laptop into their bike and go for a ride while they log the data. They will then be able to compare the log values to auto tune maps which will produce suggested fuel map changes (delta values) to be applied against the fuel maps. After a couple of tuning sessions the auto tune should stabilize around fuel map values that produce the desired auto tune map AFR's.

I have written the logging functionality and mostly written the data grouping and filtering display code, I tested it out on my bike on the way to work this morning and it is working well. I am logging data every 100ms to a csv log file and also a raw csv file for debugging purposes.

I would like to determine how accurate the built in narrow band oxygen sensor is but I don't currently have access to an accurate wideband oxygen sensor to do the comparison.

If I was to provide the small logging app i have written, would someone with data logging ability (like a DL-32 or similar) be able to do a couple of side by side logging sessions and send me the results so i can work out an algorithm to convert the ecu oxy sensor data to values that compare with the wideband oxygen sensor values?

Let me know if anyone is able to help out and i will organize to get the software to you.

Thanks

-Justin.


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jkwool wrote:

I have been working on engine logging functionality for ECU Editor. I am using the SDS connector to pull back the engine data and log to a file and I plan to see if the data is accurate and reliable enough to build a low cost auto tune feature into ECU Editor.


The plan is to allow people to plug a laptop into their bike and go for a ride while they log the data. They will then be able to compare the log values to auto tune maps which will produce suggested fuel map changes (delta values) to be applied against the fuel maps. After a couple of tuning sessions the auto tune should stabilize around fuel map values that produce the desired auto tune map AFR's.

I have written the logging functionality and mostly written the data grouping and filtering display code, I tested it out on my bike on the way to work this morning and it is working well. I am logging data every 100ms to a csv log file and also a raw csv file for debugging purposes.

I would like to determine how accurate the built in narrow band oxygen sensor is but I don't currently have access to an accurate wideband oxygen sensor to do the comparison.

If I was to provide the small logging app i have written, would someone with data logging ability (like a DL-32 or similar) be able to do a couple of side by side logging sessions and send me the results so i can work out an algorithm to convert the ecu oxy sensor data to values that compare with the wideband oxygen sensor values?

Let me know if anyone is able to help out and i will organize to get the software to you.

Thanks

-Justin.

 




Hi There Justin, Love the Direction your headed with ECU Editor!! smile I should be Receiving My Zeitronix LT-2 & DashDAQ(LCD on Board Touch Screen Data Logger)today or tomorrow, So if you haven't found somebody by the Time I get that all Hooked up I will Give it a Shot!

Side Note, would LOVE to be able to use the DashDAQ in Place of a Laptop. Wondering if there's a Way we could Log ECU Editor to DashDAQ??? We then could remove the SD Card that it Reads to, Plug that into ANY PC/Labtop and upload to Post or Share. biggrin

BTW Justin, that Gen2 ECU Should be Headed your Way today. wink



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thats an awesome idea..

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awesome idea, but i trust narrowband sensors as far as i can throw them, i have a dl32 with lots of stuff being logged happy to help there, but getting the stock ecu to be able to work with a LC1 wideband would make things much much much safer in my opinion.

all motor guys might be able to use stock narrowband sensor, but nitrous and boost no way would i trust it to aid in tuning.

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the LC1 can be configured to output whatever DC voltage you want on either of the 2 analog outputs it has.

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not sure if you have seen how megasquirt software does there tuning suggestions stuff but i like it a lot, you have a AFR table you can program in desired AFR, and then it looks at a datalog, and recommends settings etc based on the AFR table (not just 1 value which is how i think power commander works etc) and makes you approve changes and it will make map changes etc.

it would also look at number of data points taken in 1 cell when making recommendations, obviously 100 data points showing lean or rich AFR versus 1 or 2 is a big difference in whether it should be altered or not.

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ToXSicK RoCKeT wrote:

 

Hi There Justin, Love the Direction your headed with ECU Editor!! smile I should be Receiving My Zeitronix LT-2 & DashDAQ(LCD on Board Touch Screen Data Logger)today or tomorrow, So if you haven't found somebody by the Time I get that all Hooked up I will Give it a Shot!

Side Note, would LOVE to be able to use the DashDAQ in Place of a Laptop. Wondering if there's a Way we could Log ECU Editor to DashDAQ??? We then could remove the SD Card that it Reads to, Plug that into ANY PC/Labtop and upload to Post or Share. biggrin

BTW Justin, that Gen2 ECU Should be Headed your Way today. wink

 



i think the more real world data samples from different bikes and wideband logs along side narrow band logs i get the better. So that would be great if i could get some sample data when you get the DashDaq set up.

I am thinking about providing the ability to take log data from other devices like the Dash Daq or the DL-32 into the auto tune, and I think this will be the direction I take after i get the basic system working. The output from a wideband oxy sensor is going to be more reliable and provide better tuning results.

Awesome news about the ecu, email me the shipping and packaging costs and i will fix you up via paypal.

 



-- Edited by jkwool on Monday 19th of July 2010 08:54:25 PM

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smithabusa wrote:

awesome idea, but i trust narrowband sensors as far as i can throw them, i have a dl32 with lots of stuff being logged happy to help there, but getting the stock ecu to be able to work with a LC1 wideband would make things much much much safer in my opinion.

all motor guys might be able to use stock narrowband sensor, but nitrous and boost no way would i trust it to aid in tuning.



Thanks Greg, I will clean up the code today and post a version of the logging software on the net for download, as i mentioned it will be great to get a bunch of samples from different bikes and wideband set ups with parallel narrow band logs for comparison.

I am not sure about the narrowband sensor either, I will only release the code using it if i am confident that it is reliable as i dont want guys using the data for auto tune if its not. The thing that is driving this is that i dont have a wideband yet, and a lot of guys with stock bikes dont have them and probably wont have them, there is also a lot of guys out there that would like to use ECU Editor but they cant find a tuner who uses the software so I figure if i can set this up to use the narrow band reliably it will help a lot of guys out to improve the tune of their stock bikes.

Next step would be integrating with other wideband systems for guys with better logging systems and more accurate needs.


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smithabusa wrote:

not sure if you have seen how megasquirt software does there tuning suggestions stuff but i like it a lot, you have a AFR table you can program in desired AFR, and then it looks at a datalog, and recommends settings etc based on the AFR table (not just 1 value which is how i think power commander works etc) and makes you approve changes and it will make map changes etc.

it would also look at number of data points taken in 1 cell when making recommendations, obviously 100 data points showing lean or rich AFR versus 1 or 2 is a big difference in whether it should be altered or not.




Yeah that is exactly the direction i would like to take with this, have auto tune maps where a target value can be defined for each fuel cell and the suggestions will be based on some statistical methods applied to the log data for that cell and surrounding cells. I am not finalized on the specifics yet but i have made a good start and i have a good idea of the results i would like to achieve. smile



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jkwool wrote:

 

thanks Greg, I will clean up the code today and post a version of the logging software on the net for download, as i mentioned it will be great to get a bunch of samples from different bikes and wideband set ups with parallel narrow band logs for comparison.

I am not sure about the narrowband sensor either, I will only release the code using it if i am confident that it is reliable as i dont want guys using the data for auto tune if its not. The thing that is driving this is that i dont have a wideband yet, and a lot of guys with stock bikes dont have them and probably wont have them, there is also a lot of guys out there that would like to use ECU Editor but they cant find a tuner who uses the software so I figure if i can set this up to use the narrow band reliably it will help a lot of guys out to improve the tune of their stock bikes.

Next step would be integrating with other wideband systems for guys with better logging systems and more accurate needs.

 



where might one get a copy of the  software?

 



-- Edited by slantman on Monday 19th of July 2010 09:53:13 PM

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slantman wrote:

where might one get a copy of the  software?




I just want to clean up the code a bit and make it a bit more user friendly and reliable then i will post up a link so you guys can download it. should be in the next day or two.

 



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thanks for all your hard work.

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The other thing i have been thinking about (i dont know if its possible from a hardware perspective but i thought i would put it out there) is to use the 0-5v output from a wideband to feed directly into the ecu and write the auto tune functionality directly in embedded c code that runs on the ecu.

The plan would be to load the target auto tune AFR maps and the fuel trim (delta) maps to be stored in Flash Ram in the ecu (the ram that retains its memory when the power is off) and a real time adjustment would be made to the fuel injector signal in the fuel sub routines based on the Fuel Trim map.

This would be a more complicated approach and there are a lot of things that i would need to figure out like how much Flash Ram there is on our ecus and how to save data to the flash ram, how the external sensor interupts work for the AFR signal etc. But it would be the ultimate auto tune if we could get it working.

The plan would be
1) Load your Target AFR Maps into the ECU using ECU Editor
2) As you ride the Fuel Trim Map would be updated to reflect the values needed to adjust for the current conditions and the loaded fuel map.
3) After a period of time riding you could download the fuel trim map and apply it to the base map.

Just an idea at this stage, i will get the simpler logging functionality working first :) It will be easier to test ideas like the above when i get a spare ecu to play with!

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great stuff, if we just had the ability to run 0-5v from wideband into ecu would be an amazing step forward :)

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jkwool wrote:

The other thing i have been thinking about (i dont know if its possible from a hardware perspective but i thought i would put it out there) is to use the 0-5v output from a wideband to feed directly into the ecu and write the auto tune functionality directly in embedded c code that runs on the ecu.

The plan would be to load the target auto tune AFR maps and the fuel trim (delta) maps to be stored in Flash Ram in the ecu (the ram that retains its memory when the power is off) and a real time adjustment would be made to the fuel injector signal in the fuel sub routines based on the Fuel Trim map.

This would be a more complicated approach and there are a lot of things that i would need to figure out like how much Flash Ram there is on our ecus and how to save data to the flash ram, how the external sensor interupts work for the AFR signal etc. But it would be the ultimate auto tune if we could get it working.

The plan would be
1) Load your Target AFR Maps into the ECU using ECU Editor
2) As you ride the Fuel Trim Map would be updated to reflect the values needed to adjust for the current conditions and the loaded fuel map.
3) After a period of time riding you could download the fuel trim map and apply it to the base map.

Just an idea at this stage, i will get the simpler logging functionality working first :) It will be easier to test ideas like the above when i get a spare ecu to play with!




That would Be AMAZING to See happen!! I Received My Dashdaq Yesterday.......and to Put it Mildly, THIS THING IS AWESOME!!!!!! Not only will it work in Conjunction with Zeitronix & Innovated Hardware/Software But also has OBD2 Hook up as well. This Damn thing will do Just about EVERYTHING But ride the Bike for you. smile

Here is the OBDII Cable "Pin Out" right out of the instructions.......

1. Red Vehicle Power In/Out

2. Orange Serial Port 1 Rx Connect to pin 3 of PC DB-9

3. Yellow Serial Port 2 Tx Connect to pin 2 of PC DB-9

4. Blue Serial Port 2 Rx Connect to pin 3 of PC DB-9

5. Brown Serial Port 1 Tx Connect to pin 2 of PC DB-9

6. Black Case Ground 1Meg Ohm to Gnd. For cable

shielding. Do not use as a

Ground.

7. White Analog input 2 0.0 to 5.0 Volt input

8. Pink 5V @ 500ma Output Resettable fuse protected.

9. Green Analog input 1 0.0 to 5.0 Volt input

10. Shield Ground This is the signal ground.

Connect to pin 5 of PC DB-9

Note: For future compatibility tie 6 and 10 together.

I am NO Program writer, But seems like someone who KNEW what they were doing could easily Migrate this thing into ECU Editor???

Wish there was a way to Post the Complete instructions here, But it's 52 Pages Long! If someone is interested you could go to DashDAQ.com though. wink



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very nice justin, you and jasa was a great addition to petrik's efforts, and we can all benefit from this......smile

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ToXSicK RoCKeT wrote:

 

That would Be AMAZING to See happen!! I Received My Dashdaq Yesterday.......and to Put it Mildly, THIS THING IS AWESOME!!!!!! Not only will it work in Conjunction with Zeitronix & Innovated Hardware/Software But also has OBD2 Hook up as well. This Damn thing will do Just about EVERYTHING But ride the Bike for you. smile

Here is the OBDII Cable "Pin Out" right out of the instructions.......

 

1. Red Vehicle Power In/Out

2. Orange Serial Port 1 Rx Connect to pin 3 of PC DB-9

3. Yellow Serial Port 2 Tx Connect to pin 2 of PC DB-9

4. Blue Serial Port 2 Rx Connect to pin 3 of PC DB-9

5. Brown Serial Port 1 Tx Connect to pin 2 of PC DB-9

6. Black Case Ground 1Meg Ohm to Gnd. For cable

shielding. Do not use as a

Ground.

7. White Analog input 2 0.0 to 5.0 Volt input

8. Pink 5V @ 500ma Output Resettable fuse protected.

9. Green Analog input 1 0.0 to 5.0 Volt input

10. Shield Ground This is the signal ground.

Connect to pin 5 of PC DB-9

Note: For future compatibility tie 6 and 10 together.

I am NO Program writer, But seems like someone who KNEW what they were doing could easily Migrate this thing into ECU Editor???

Wish there was a way to Post the Complete instructions here, But it's 52 Pages Long! If someone is interested you could go to DashDAQ.com though. wink

 




Looks pretty cool, let us know how you go setting it up and what inputs you are logging. What is the maximum log rate it can do?



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j-kwool how is this progerssing....is there anyone can do to help...?

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jkwool wrote:

Looks pretty cool, let us know how you go setting it up and what inputs you are logging. What is the maximum log rate it can do?

 




Don't know if this Answers your Question, But Here are Some Specs......

 

TECHNICAL SPECIFICATIONS

Display 4 COLOR TFT w/touch panel

Resolution 480 x 272 (QWVGA) w 24-bit color display

System Processor 240MHZ ARM9

Vehicle Bus Processor 48MHZ ARM7

RAM 64MB SDRAM

Flash 16MB Flash

Memory Expansion MMC/SD Card 128MB to 8GB+

Device I/O touch-panel, ambient light sensor, 16-bit stereo line-out, 1W speaker, USB device port, programmable

button

Vehicle I/O CAN, J1850VPW (GM Class 2), J1850PWM (Ford SCP), ISO9141, KWP2000

Expansion I/O (2) USB Host Ports, (2) RS232 Ports, (2) 0-5V 10-bit analog inputs

Add-on sensors Blackline GPS (up to 20HZ), 0-5V Wideband O2 Sensors, NMEA GPS, USB 3-axis Accelerometer, USB KType

Thermocouple

Operating temperature -35 to 85C

Operating voltage 6 to 30V

Current Draw 200mA at 100% backlight

Dimensions 4.6 x 2.75 x 1

Weight 0.5LB

Operating System Linux

Warranty factory tested with 1 year warranty

Other Features Real Time Clock, locking connectors, factory tested, field upgradeable firmware

Mounting Pattern AMPS 4-HOLE standard

Package Contents DashDAQ, Vehicle Cable, USB Cable, Windshield Pedestal, CD-ROM, users manual



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Ok i have got the ECU Data Logger application up and running and working reliably. I would really appreciate anyone who has a wideband and datalogger on a Gen 2 to do a side by side logging session using both their wideband and this program and send both sets of log files through to me.

The purpose of these tests is so that i can get a bunch of data from different widebands and different bikes to write an accurate formula to convert the built in narrow band oxy sensor values to AFR values that can be used for tuning.


If this link does not work for you the .zip file is also available here http://cid-7e515513accb09d1.office.live.com/embedicon.aspx/.Public/ECUDataLogger.zip

If you have any problems downloading the above file just email me at ECUDataLogger @ gmail.com and i will reply back with the .zip file

Instructions for Use:
  1. Download .zip file from the above location
  2. Unzip the files into a folder on your laptop
  3. Hook up your interface to your bike and Laptop and put the interface in Engine Data mode and turn on your ignition
  4. Run the K8EngineDataLogger.exe application
  5. Start your engine
  6. After a short period the indicator should go green and you will see some basic info like TPS, RPM etc
  7. Click the "Create Log File" button and select a location on your pc to save the log file
  8. When you are ready to start logging data click the "Start Logging" button
  9. When you are finished logging click the "Stop Logging" button
  10. If you would like to view a log file click the "View Log" button and you can view TPS-RPM and IAP-RPM data in a grid.
Please send all log file  (both .csv files from my application and the log data from your wideband) to this email address i have set up for this purpose ECUDataLogger @ gmail.com

Let me know if you have any problems or questions using the program!

Cheers

-Justin.


-- Edited by jkwool on Friday 23rd of July 2010 12:45:26 AM

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In addition to the above, it would be good to see a bunch of different wideband log file formats as I would like to extend the functionality of this when i integrate it with ECU Editor to allow you to load up log files from different widebands to be used with the AutoTune feature in ECU Editor.

This would allow the guys with widebands to log a session using your wideband and then load the log data into ECU Editor and compare against the AutoTune map that you have entered. The AutoTune would then suggest changes to your fuel maps to get your AFR closer to the AutoTune map. This should make it easier and faster to get your bikes tuned and take some of the guess work out of which cells should be changed in the fuel maps.

Any feedback on the above is welcome as well!


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it will not let me dnload it .
this is what it says
Sorry, we are unable to scan this file for viruses.

We are experiencing technical difficulties. Download anyway
and the download anyway does nothing

-- Edited by slantman on Friday 23rd of July 2010 12:33:35 AM

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slantman wrote:

it will not let me dnload it .
this is what it says
Sorry, we are unable to scan this file for viruses.

We are experiencing technical difficulties. Download anyway
and the download anyway does nothing

-- Edited by slantman on Friday 23rd of July 2010 12:19:52 AM



Ok, sorry about that, send me an email at ECUDataLogger @ gmail.com and i will send through the .zip file

Does anyone know a better place that i could host the .zip file?

Cheers

 



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Ill host it email it over: )

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it let me download it just fine

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never mind once i made a goggle account it let me download it


-- Edited by slantman on Friday 23rd of July 2010 01:08:36 AM

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smithabusa wrote:

Ill host it email it over: )




Its ok i have found another place i can host it try this location, I will edit the original post as well with the alternative location.

 

http://cid-7e515513accb09d1.office.live.com/embedicon.aspx/.Public/ECUDataLogger.zip



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How much data will it store? Like the last minute, 5 minutes, etc? So we hit the start logging button, make a pass, then we can come back and hit stop logging and check the session? I may can try it this weekend and compare against what i have on the bike now.

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ButchB wrote:

How much data will it store? Like the last minute, 5 minutes, etc? So we hit the start logging button, make a pass, then we can come back and hit stop logging and check the session? I may can try it this weekend and compare against what i have on the bike now.




Its virtually unlimited log size as it writes the log to a .csv file on your laptop hard drive, i have written it so that it only writes a new entry to the log files if there is new data available. the limitation is the speed (or lack there of) of getting the data from the ecu over the serial communication line. The software currently requests data from the ecu every 150 ms or so, i may be able to speed this up but i just left it at this speed to start getting some results.

As the data is in a .csv file you can also open it up in Microsoft Excel and view it there, i am logging all the useful sensor data like Gear, Ignition timing, Clutch position, coolant temp, STP etc etc to the log files.

To do a log session click "Create Log File" then hit start logging go for a ride then hit stop logging and then click "view data log" to see the logged data. The conversion from the ecu values to AFR is not accurate yet and this is why i would like to get some results from guys with wideband o2 sensors so i can improve the  results and see if its feasible to use the narrowband o2 sensor for tuning purposes.



-- Edited by jkwool on Friday 23rd of July 2010 01:19:10 AM

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very nice work jkwool, i will not be home for another 2 weeks, the family and i took a 3 week vacation, now that i got my pipe back....smile...i can throw it together and make some motor passes with my wego unit.....wink

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data sent

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smithabusa wrote:

data sent




Thanks Greg, did you send it to my home email, if so i will check it out when i get home tonight!



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epitis.com just forwarded to the gmail account

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smithabusa wrote:

epitis.com just forwarded to the gmail account




Got it thanks mate, data analysis begins..... :)



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jkwool wrote:

In addition to the above, it would be good to see a bunch of different wideband log file formats as I would like to extend the functionality of this when i integrate it with ECU Editor to allow you to load up log files from different widebands to be used with the AutoTune feature in ECU Editor.


This would allow the guys with widebands to log a session using your wideband and then load the log data into ECU Editor and compare against the AutoTune map that you have entered. The AutoTune would then suggest changes to your fuel maps to get your AFR closer to the AutoTune map. This should make it easier and faster to get your bikes tuned and take some of the guess work out of which cells should be changed in the fuel maps.

Any feedback on the above is welcome as well!

 




VERY COOL Justin!!! smile ........ Man what's Next, a little Guy that will pop out of the ECU and change the Oil on the Bike? Hahahaha biggrin

You are Smokin My Friend, Please Keep up the Great Work Sir!

BTW, let Me know once that ECU Makes it to You.



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I have incorporated the information from Greg's wideband logs into a new version of the ECU Data Logger, the AFR readings should be a lot closer now.

Please send any test log files along with your side by side wideband log files to EcuDataLogger @ gmail.com

The new version is available here:


Cheers

-Justin.


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ill log another idle and rev session later, supposed to be bad thunderstorms all day today

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sent some data, ran the bike through the gears on the rear stand etc

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smithabusa wrote:

sent some data, ran the bike through the gears on the rear stand etc




Got it, thanks mate!



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ill get some road data tomorrow assuming i can back pack my laptop and not have any issues there lol

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Need to get a nice laptop specific laptop backpack Greg. I have one from TARGUS that works well. Has a waist belt as well which works well while on the bike (not sure if they make waist belt extenders though. biggrinbiggrin )


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sportbikeryder wrote:

(not sure if they make waist belt extenders though. biggrinbiggrin )



OUTCH! Hahaha laughing.gif

 



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08 Busa AKA: }ToXSicK{


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If they make helmets to fit your dome they probably make a backpack for me lol

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15 minutes of road data sent, some idle in garage while i suited up with laptop, some cruising around up to 50 mph or so on the country roads, slowing down for about 100 bicycles out riding today, then some back road boosting :)

-- Edited by smithabusa on Sunday 25th of July 2010 03:10:06 PM

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Thanks Greg!

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LC1 wideband with blue gauge shipping express mail to australia tomorrow, make us proud Justin :)

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smithabusa wrote:

LC1 wideband with blue gauge shipping express mail to australia tomorrow, make us proud Justin :)




Thanks heaps Greg, I will let you know when it arrives!

 

I am hacking my way through the standard oxy sensor code at the moment to work out how it works and to see how we will go about feeding in the output from the wideband.



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Hi, there is a new version of the ECU Data Logger available now with the addition of a boost table which displays Boost in psi vs RPM the same as in ECU Editor with the average AFR plotted in the grid.

At this stage this is still in test phase and it is using the built in oxy sensor so probably not too useful for you guys with turbos yet but it would be good to get some feedback as this will be useful when we get it working with a wideband as it should help you to dial in the boost fueling in ECU Editor.

I have also added the ability to drill down into each data point and see all the information at that point in time i.e. STP, GEAR, IGN, CLT, IAT etc etc.




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nice work, but i cannot see all of the right side of the display.
it cuts it off right at the "A" in the word name.
i am running 1024x768.

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slantman wrote:

nice work, but i cannot see all of the right side of the display.
it cuts it off right at the "A" in the word name.
i am running 1024x768.




Old school small screen confuse A new version is available at the same link as abive, I have changed the layout and put the 2 list boxes on top of each other so you should be able to view them both now!



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