Datalogging Question (Eric or Adrian maybe?) - The Saab Link Forums

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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Old 03-02-2005, 12:15 AM   #1
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Datalogging Question (Eric or Adrian maybe?)

I know that some of you guys have hooked up your laptop to the obdII port in the car to log intake temp data and such, I would like to know what it necessary to do this myself.

Software, cord, brainpower, etc
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Old 03-02-2005, 03:36 AM   #2
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Old 03-02-2005, 09:14 AM   #3
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No offence, but IHMO digimoto is not worth the money compared to other free OBD loggers. Oh yes, if you like to look at real time "graphs" and such go for it, but I must warn you that the logging speed is far from good. With all OBD logger and saab there is a lack of log speed to begin with. Digimoto is about twice as slow as the free OBD II logger for instance. With OBD II one can get about 1.5Hz re-fresrate when two sensors are being logged.

I have personally contacted Digimoto over this issue, but after few mails they stopped to aswer my guestions, I take this as "it is how you say it". One cant blame me from trying, I have sent about a dozen mail to the genteman at digimoto asking and asking for their comments. If this is the way how paying customers are treatet at digimoto then I'm more than happy to spen my bucs elseware...

just my 0.02
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Old 03-02-2005, 09:26 AM   #4
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To the guys already using some sort of datalogger, what software are you using?
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Old 03-02-2005, 09:50 AM   #5
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To the guys already using some sort of datalogger, what software are you using?
I normally use OBD II logger and then do the work with excel.
To me logging re-fresrate is far more important than fancy graphs or power calculator, 1/4 timers and sucs.

Free software:

GM Mode 22 Scan Tool by Terry
OBD Gauge for PalmOS and Pocket PC by Dana Peters

OBD Logger by Jonathan Senkerik
OBD-II ScanMaster by Wladimir Gurskij (ScanMaster 3.52 - local copy)
obd2crazy.com
OBD2 Scantool by Ivan Andrewjeski
OBDII for ELM322 by David Huffman
pyOBD by Donour Sizemore for MacOSX and Linux
RDDTC NEW! by Pete Calinski
Real Scan by Brent Harris
ScanTest for Pocket PC by Ivan Ganev aka a-ser
wOBD by WDT
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Old 03-02-2005, 10:48 AM   #6
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Vigge,

Anyone can get "free" software lol. I don't know if you are aware of the product, but the hardware is where most of the money comes in at.

Personally, I'd rather have a program and hardware combination that reads codes, can reset the CEL light, have an estimated (if anything..) scantool, and give real time sensor readings.. all in one package RATHER THAN having to copy my values and paste them into Excel and figure out the correct formula for each wanted output. Just to save a few bucks. I highly doubt your Excel method can come up with all that data at a 1.5HZ refresh rate.

For tuning or even basic automotive maintence... I fail to see many people copying and pasting their values into Excel.

I may be off in some of my statements (so sue me), but I think you get my general point.
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Old 03-02-2005, 11:19 AM   #7
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Originally Posted by Blaque_Out
Vigge,

Anyone can get "free" software lol. I don't know if you are aware of the product, but the hardware is where most of the money comes in at.

Personally, I'd rather have a program and hardware combination that reads codes, can reset the CEL light, have an estimated (if anything..) scantool, and give real time sensor readings.. all in one package RATHER THAN having to copy my values and paste them into Excel and figure out the correct formula for each wanted output. Just to save a few bucks. I highly doubt your Excel method can come up with all that data at a 1.5HZ refresh rate.

For tuning or even basic automotive maintence... I fail to see many people copying and pasting their values into Excel.

I may be off in some of my statements (so sue me), but I think you get my general point.
Who said anything about copying and pasting, maybe .csv is the way to go
Takes about a minute or two to plots the graphs.All these programs log senosor data to file, not some "raw" strings if that is what you mean.

I cant see much use besides "visual" fun with a logger what can log a number every 1500rpm or so... I would not mention tuning and OBD logger in the same sentance the re-fresrate is way way way to slow for that...

Like I said before this logging speed is far more important to me. I respect every bodys point of view what they value, but I felt this is something wort mentioning to all who are interested in logging values.

I hopefully will have a CAN logger soon, so I be out out this "one value per 1000rpm" for ever. Sensors can also be monitored with a scope, its not too difficult to hok up.
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Old 03-02-2005, 11:31 AM   #8
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the only thing i would b worried with just using a software, and not matching hardwre is burning my laptop or worse my car....... i feel better getting hardware and software that are matched....


just for the helll of it what kinda hardware would i need to use if i used GM Mode 22 Scan Tool by Terry
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Old 03-02-2005, 11:37 AM   #9
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o and vigge i think every software u posted up above... is for use with elmscan..... so its worthless without the elmscan interface i dont think any of em work without it
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Old 03-02-2005, 04:59 PM   #10
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I like Autoenginuity's product. Software + Hardware. With two sensor's the refresh rate is about every .6 seconds. With one sensor it's about every .3 seconds.

It can also read and reset Diagnostic TRouble Codes as well as clearing the CEL (technically it's a MIL, but nevermind that) ... on top of that it can initiate system tests, whereas most scan tools can only monitor.

Costs a pretty penny though. $250. Ouch!

Adrian~
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Old 03-02-2005, 05:09 PM   #11
 
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Quote:
Originally Posted by SaabTuner
I like Autoenginuity's product. Software + Hardware. With two sensor's the refresh rate is about every .6 seconds. With one sensor it's about every .3 seconds.

It can also read and reset Diagnostic TRouble Codes as well as clearing the CEL (technically it's a MIL, but nevermind that) ... on top of that it can initiate system tests, whereas most scan tools can only monitor.

Costs a pretty penny though. $250. Ouch!

Adrian~
Nice pick. I have autoenginuity as one of my Ebay auto searches and I've occasionally seen it come down to $200-225 or so....Not much more than that.

It's a first-rate product, but it's also first-rate money....
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Old 03-02-2005, 08:58 PM   #12
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Originally Posted by ricot83
o and vigge i think every software u posted up above... is for use with elmscan..... so its worthless without the elmscan interface i dont think any of em work without it
Isn't this given? What does digimoto use? Elmscan...

I was talking about the digimoto SW in my posts not the needed hw parts for OBD logging.
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Old 03-02-2005, 09:08 PM   #13
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Originally Posted by Blaque_Out
Vigge,

I highly doubt your Excel method can come up with all that data at a 1.5HZ refresh rate.
If you doubt me, maybe you should give it a try. Looked trough few logs of mine I got 1007samples in 604s, so that equals to 1.667Hz on average (two sensors). Second file 97samples in 56s =1.73 Hz (with two sensors). 20 samples in 5s = 4Hz (One sensor) , 42 samples in 13s = 3.3Hz (one sensor) aso.

This is exactly "supersonic", but faster than alot of other sw's I have tried available OBD.
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