Most of you guys are probably not familiar with EvoScan. It's a popular tool for datalogging mostly EVOs but it apparently works on newer Subarus too although I've never used it for that.
So why am I posting this here LOL? Well when I was looking to see if updates were available I noticed this:
HighSpeed USB Cable for Subaru 1990-1998 SSMI vehicles. Perfect for EvoScan. Specifically supports pre 1998 Subaru vehicles with a 9 pin diagnostic port for EFI Datalogging, or if your vehicle has a 16pin obd2 style plug with metal pins in pin12 and pin13, you will need this SSMI cable. Included is virtual comport software to use this USB cable with serial port based software.
Granted I don't have this cable and probably won't ever (I've got standalone EM). Just wanted to post it for any of you who are looking for another option. The software is very good IF it really works for the early model Legacy.
The software normally supports the integration of various popular wideband units. I have no idea if it does that with with early model cable.
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
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.
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
Long live the forums! Down with FB!
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
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
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.
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.
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.
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.
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
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
