Nissan ECU Tuning

RomChip200 · Joined: 27 Nov 2003 Posts: 196 Location: France

I made the cable myself as my Medion PNA100 PDA is USB only from factory.
But the pinout is the one shown on this page :
http://home.wxs.nl/~geenenaj/

The connector is very generic and used by many PDAs, but the pinout slightly differs sometimes. You can buy this connector to make yourself a cable (all the IPAQ 38xx - 39xx use this connector for example).

Concerning the latest verison of the app. you sent me, it works fine. I don't have the 6-7 bytes issue, I tried it as you suggested me.
But I have a small request : as soon as the app. is started, it cannot go directly to the gauges (automatic mode, very useful in a car !) in my case, simply because the auto detection starts from COM1 everytime, whereas my COM is 2 .... I'm obliged to select it manually. You should save the latest config in a file and retrieve it.

Could you make me a last version starting from COM2 directly ? I couldn't wait for August .... Wink

Moreover, COM1 is my GPS and this could cause some interference.
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200SX CA18DET S13 '92.
300ZX TT '91.

NewKleer · Joined: 09 Oct 2004 Posts: 159 Location: Sydney

ill try get something done in the next week

MichaS14a · Joined: 03 Feb 2006 Posts: 9 Location: Germany

Yes the last cable I have posted ( http://www.haid-services.de/pd1070150445.htm?categoryId=58 ) works very well and have a connector for a power supply too, so I am able to load my PDA while I am driving.

Edit: COM1 works very well for me. Wink

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Nissan 200SX S14a (SR20DET)

MichaS14a · Joined: 03 Feb 2006 Posts: 9 Location: Germany

Hello!

I have a question about ECU Talk Pocket PC: Is there a possiblity to make more sensor-reads per second?

I have found out that e.g. Nissan DataScan 1.51 reads averaged every 50 ms the sensor data (via Laptop of course).

ECU Talk PPC reads the sensors one time per second.

Is this modifiable in the software or an issue from the speed of the PDA?

Greetings
Michael
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Nissan 200SX S14a (SR20DET)

NewKleer · Joined: 09 Oct 2004 Posts: 159 Location: Sydney

are u basing this on the amount of screen updates, or logs to file?

if on screen updates, then the speed of the pda dictates this, however i think thats unlikely given the slowest of pda's still manages a few updates per second

if indeed youre basing this on the 1 entry per second in the log, this is due to for some reason being no millisecond output on the pda (see below). ecutalk will only make a new log entry if the time is different from the previous time (otherwise it assumes the values are part of the same "packet").

ill have a look into resolving this when i work on it next

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemDateTimeClassNowTopic.asp

.NET Compact Framework Platform Note: In Windows CE .NET, time is specific only to the second. You can get a more precise time span measurement, for example, in milliseconds, by using the TickCount property.

MichaS14a · Joined: 03 Feb 2006 Posts: 9 Location: Germany

I mean the entries in the log-file to analyse them when i am ready with my test drive.

During the drive I can not compare the update intervalls as I am only able to connect either the PDA or the Laptop, not both together.
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Nissan 200SX S14a (SR20DET)

NewKleer · Joined: 09 Oct 2004 Posts: 159 Location: Sydney

yeh, thats due to there being no millisecond resolution on the pocket pc (as ull see by the logs all being 0 millisecond)

consult itself will stream around abouts 15 times per second, if the pda can keep up with this then the logging (when fixed) should write as often as the graphs update

MichaS14a · Joined: 03 Feb 2006 Posts: 9 Location: Germany

15 times per second is a lot! I will see if my PDA can handle this frequenz. Laughing

I think that the log-file maybe get very big if the update intervall is very high. Now there is one log file and new entries are appended. Do you think it is handier to make one log-file every time the application is started? For example like "log <date-time>.log"?
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Nissan 200SX S14a (SR20DET)

NewKleer · Joined: 09 Oct 2004 Posts: 159 Location: Sydney

i want to fix the log files to use the standard format that nissan datascan uses, as then it can be analysed etc with existing tools (theres some problem that i think is sold at blazt.biz that can analyse log files). also hard to import a file into excel or similar if it has many headers throughout the program

putting it all in same file was a mistake.

im not sure whether i should create a new file with start time/date (eg log_060606_1205.log or just leave the filename to the user and overwrite if it exists.

the log files will get big, but thats something the user has to take care of if they are going to use the logging.

MichaS14a · Joined: 03 Feb 2006 Posts: 9 Location: Germany

I think a new file with creating date is the better solution.
The manual deletion of older log-files costs only a few seconds (even with the Explorer) and no important data will be automatically overwritten.

I am not worry about the size of the log-file. If my internal memory is not enough, I must copy the program directory to my SD-Card (1 GByte) and start the Software from there. The only thing is that the access (above all the writing speed) to the Memory-Card is not so fast as the internal memory. But I think this can be neglected.
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Nissan 200SX S14a (SR20DET)

NewKleer · Joined: 09 Oct 2004 Posts: 159 Location: Sydney

ive released an update which fixes the logging frequency (now its as often as pda can handle, ie as many log packets as sensor updates on screen, depends on speed of ur pda), and also creates seperate file each time for logging)

http://www.ecutalk.com

RomChip200 · Joined: 27 Nov 2003 Posts: 196 Location: France

How does it handle the COM port ? Any default setting ?
I'ven't tried yet Smile

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200SX CA18DET S13 '92.
300ZX TT '91.

NewKleer · Joined: 09 Oct 2004 Posts: 159 Location: Sydney

u can click detect if u dont have problems with com ports, otherwise enter the port "COM1:" for example (need the ":") and click connect and it will try to use that port if it exists.

some people have their ppc crash when it auto detected and/or tried to connect to com1 automatically

RomChip200 · Joined: 27 Nov 2003 Posts: 196 Location: France

NewKleer · Joined: 09 Oct 2004 Posts: 159 Location: Sydney

in the latest one u simply choose the port u want (com1-com20) - it doesnt detect and it doesnt auto connect (old versions are available if people want that) so it wont crash yours.

in the next major release when ive got some time, ill make it able to save port u connect on and auto connect