The EvoScan monitor and data logger by Hamish Ahern is a great piece of software that runs on modern Windows OS's via a USB port. It can monitor any or all of the SSM parameters together and in realtime as values or as gauges, unlike the B10 which can only monitor one at a time. (The gauge image here was just my first attempt at configuration; gauge layout is customizable and there are many gauge styles available). It can also log the data, which can be analyzed later. Here's a time plot of a warmup cycle of my engine. The data can be exported to a csv file for import into excel or other software for further analysis; many of my more detailed analyses of engine parameters were done this way.

Evoscan sells cables ready-made to connect to the SSM port. (However, because I wanted to be able to swap between USB- and parallel-based cables, I built a custom USB cable - details below.)

As noted here, most of the ROM addresses in Evoscan's database are passed down through many generations from the original creators, many with errors intact. As I get the opportunity to examine logs from different ECUs, I will be posting what I believe to be more correct versions of the config files for various ROM IDs:

Updated/corrected Evoscan Configs for ROM IDs:

7225xx

Note that the corrections are being submitted to Evoscan, so may eventually be incorporated in their database (or even improved further!).

"I loved that I was able to see how much knock I was getting, what my max coolant temp and boost pressure was all with a glance."

Posted: Sun Sep 21, 2008 2:16 pm

Joined: Sun Nov 05, 2006 2:55 pm

Posts: 138

Posted: Mon Sep 22, 2008 9:42 pm

Very cool, good find.

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Legacy Central

1997 Legacy Outback Limited - DD

2001 Legacy Outback Wagon - SO/DD

1998 Legacy L Wagon - DD | 2000 GT Limited | 93 Legacy Touring Wagon 5MT | 90 Legacy L+

Posted: Thu Oct 23, 2008 8:27 pm

Sent off a request to find out if it will work...

Anyone here know?

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-General's Projects -TJI Tuning-

Posted: Fri Oct 24, 2008 12:49 pm

Yes. It works on the Legacy and also the SVX.

It's by far the best datalogging software available at the moment.

_________________

2 x 1991 JDM SVX Version L 4WS

1 x 1994 JDM SVX Version S40ii

1 x 1996 Legacy 2.2GX wagon (dual-ratio)

For ECU & TCU Diagnostics and Datalogging. See http://www.alcyone.org.uk/ssm

Posted: Thu Oct 30, 2008 10:32 pm

b3lha wrote:

Yes. It works on the Legacy and also the SVX.

It's by far the best datalogging software available at the moment.

Good to hear.

Posted: Sun Nov 02, 2008 12:16 am

This program also works with my RS232-type serial cable, so you don't need the EvoScan-specific one if you have something already.

Posted: Tue Nov 04, 2008 7:27 am

I ordered the cable and software.

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Disclaimer: If anything I post is inaccurate, please correct me. I do not wish to add to the misinformation floating around on the internet.

That being said, everything I post is accurate to the best of my knowledge.

Rio Red '91 Legacy SS

Posted: Wed Nov 05, 2008 6:47 am

please post up when you get it working. I badly needs to log things to get a decent tune and see wtf is up with my wagon.

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You have to drive and you and have to try if you want the win, you don't achieve anything if you just cruise around - Jari-Matti Latvala

Posted: Sat Nov 08, 2008 11:46 pm

It isn't working correctly for me-

I know the EvoScan software works correctly because I use it to log my WRX, but the numbers it shows me on the SS are way off.

I bought the $60 evoscan cable for use with our obd1, and regardless of what ecu type I chose in the software the numbers are completely weird.

Is there a special driver needed for this cable? Vista automatically installed a driver when I plugged it in....

I have some XP laptops around I might experiment with those...

Anyone have an issue like this?

_________________

-General's Projects -TJI Tuning-

Posted: Sun Nov 09, 2008 12:01 am

I'll be curious if anyone gets it to work. OBD1 communications is a lot more proprietary then OBD2, so there may be some issues.

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Josh

surrealmirage.com/subaru

1990 Legacy (AWD, 5MT, & EJ22T Swap)

1997 Impreza OBS

If you need to get a hold of me please email me rather then pm

Posted: Sun Nov 09, 2008 3:26 am

You have to add in the proper RAM locations and conversions for our ECU. The default one is wrong for our cars.

Posted: Sun Nov 09, 2008 3:37 am

TurboBeater wrote:

You have to add in the proper RAM locations and conversions for our ECU. The default one is wrong for our cars.

And how does one obtain that information?

GD

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91 SS, 94 GT, 84 Wagon, 83 Hatch, 85 Brat.

Posted: Sun Nov 09, 2008 9:25 am

Yes, lets get that info in this thread for those who have bought the cable/software...

_________________

-General's Projects -TJI Tuning-

Posted: Tue Nov 11, 2008 11:56 am

What type of ECU are you using?

I'm currently working to find the parameters for a Hitachi "Z1" ecu, used by the Impreza CS EJ15. If your ECU is also Hitachi then you may find some helpful information in my thread at http://www.subiesmart.com/forum

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2 x 1991 JDM SVX Version L 4WS

1 x 1994 JDM SVX Version S40ii

1 x 1996 Legacy 2.2GX wagon (dual-ratio)

For ECU & TCU Diagnostics and Datalogging. See http://www.alcyone.org.uk/ssm

Posted: Tue Nov 11, 2008 5:30 pm

The stock Hitachi ECU (93 SS 5spd)

I don't know much else about this particular ECU, just things I've read on this board etc.

Hoping to get a better idea of how it handles control of the motor via logging....

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-General's Projects -TJI Tuning-

Posted: Tue Nov 18, 2008 3:03 am

I need the ECU ID to send to the EcoScan people... I opened a support ticket, and was told if I send them this, they can start working on it....

Does Ecoscan show the ID when you connect?, I'll have to plug it in again and see...

_________________

-General's Projects -TJI Tuning-

Posted: Sun Nov 23, 2008 6:52 am

I can get the info for you from Revtronix. Give me some time though.

Posted: Mon Dec 15, 2008 1:43 am

That interface does work with older subarus and the only problem I had was that I needed to use a usb to serial adaptor as recommended with the download. I've modified the data file so it has more subaru models in it. If you go into the program, find the data file and right click to "edit", you can post all or part of this in it and it will read subarus...

Last edited by log1call on Mon Dec 15, 2008 2:03 am, edited 2 times in total.

Posted: Mon Dec 15, 2008 1:49 am

Damn, that doesn't look right, I'll try again with just the subaru stuff. You just paste it in at the bottom with a <ecu> above and below it. If this doesn't work this time someone better tell me how to post the whole file on here someplace.

Last edited by log1call on Mon Dec 15, 2008 2:04 am, edited 2 times in total.

Posted: Mon Dec 15, 2008 1:51 am

Damn, still didn't allow all of it. Someone better tell me how I can post the whole file somewhere.

Posted: Mon Dec 15, 2008 7:22 pm

If you want to email me the file, I can host it.

_________________

Josh

surrealmirage.com/subaru

1990 Legacy (AWD, 5MT, & EJ22T Swap)

1997 Impreza OBS

If you need to get a hold of me please email me rather then pm

Posted: Mon Dec 15, 2008 9:47 pm

Hi Josh,

the file is on it's way. People need to check the figures they get because some of the ecu addresses are not correct I think but I have not got the cars to check them against and there are zillions of variations it seems. Perhaps we could have a thread where people can post their suspected ecu addresses as they find them and have them peer reviewed before we incorporate them into a new data file? Same thing applies to the S.S.M program from vwrx. Cheers, Brett.

Posted: Tue Dec 16, 2008 7:13 pm

Here's the files

http://main.experiencetherave.com/subar ... voscan.zip

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Josh

surrealmirage.com/subaru

1990 Legacy (AWD, 5MT, & EJ22T Swap)

1997 Impreza OBS

If you need to get a hold of me please email me rather then pm

Posted: Tue Dec 16, 2008 8:15 pm

Hi all,

if you are using those files please be aware that some of the addresses may not be correct and the information you get out man not be either.

i have used the 7232xx, which I modified because the O2 average was a meaningless number that never changed and was useless, so I have added a live figure, apart from that it all works I think.

I also made the 703315 file which I think is all correct except for the knock correction, which I didn't need at the time.

The three addresses that are the hardest to find if you are making a new file are the O2, A/F correction and the knock correction. They are awkward because they should all be hovering around a middle point which means that the actual figure that comes out of the ecu, before it has any correction made to it, should be around 128.

After correction factors have been applied the O2 should swing constantly from approximatly point one of a volt, up to approximatly point nine of a volt. If the system is working correctly though the voltage should swing within about point two of a volt, of four point five, that is to say, it should swing from about point three to point seven. To test your O2 either let an air leak in or pull one plug and the figures should go briefly down or up. Be aware though that if the O2 feedback is working the figures will soon centre back again around four point five volts. The other thing that effects this O2 reading is the A/F correction. It should normaly be reading zero, but when you let in a air leak, or pull a sparkplug wire, it should note the O2 reading and alter to a positive or negative number of about one or two. So, if everything is correct, warm motor idling, and you cause a missfire, the O2 should go up towards point seven and straight away the A/F should change from zero to a negative one or two. If instead of pulling a plug lead you cause an air leak then the O2 should drop towards point two and straight away the A/F correction should go one or two positive. As soon as the A/F has made a correction the O2 reading should go back to it's usual swing in the middle of it's scale. If either figure is slow to adjust, or not in the centre of it's travel, then you may have a problem

The other difficult address to find is knock because you have to load the motor and then the knock figure will only give a reading for a moment before it returns to zero. The give-away clue there is that as the knock figure goes up, the ignition timing goes down.

With all these tests and readings, it is best to turn off all the sensors you do not need to record, so as to get the fastest refresh rate possible.

Hope all that is understandable and helpful. Cheers, Brett.

Posted: Tue Dec 23, 2008 12:19 pm

Here are the parameters for my Legacy.

TomsSVX got the SVX addresses correct by eavesdropping a select monitor. Then I disassembled the program code on the Legacy and SVX and compared them to find the corresponding Legacy addresses. No guesswork involved.

1996 UK model Legacy EJ22

JECS "U1" ECU Rom ID: 7432A1

10a2 AFR Correction

109a Advance

1305 Load

1306 Injector Pulse Width

1307 Airflow

1310 O2 Sensor

1314 ISC Duty Cycle

1328 Knock Correction

1329 TPS

1335 Battery Voltage

1336 Speed

1337 Coolant Temp

1338 RPM

133a O2 Max

133b O2 Min

_________________

2 x 1991 JDM SVX Version L 4WS

1 x 1994 JDM SVX Version S40ii

1 x 1996 Legacy 2.2GX wagon (dual-ratio)

For ECU & TCU Diagnostics and Datalogging. See http://www.alcyone.org.uk/ssm