CLuTZ
Diamonds are forever....
This is an awesome thread. Full version can he found here:
http://ozvr4.com/forums/showthread.php?9829-How-To-Make-your-own-datalogging-cable
I shamelessly stole this from OZVR4- pretty good for you OBD2 guys with RVR's......
http://ozvr4.com/forums/showthread.php?9829-How-To-Make-your-own-datalogging-cable
I shamelessly stole this from OZVR4- pretty good for you OBD2 guys with RVR's......
Hotwire;185474 said:Background
For those that wish to have the ability to log the Engine (EFI) ECU but don’t want to pay the $137US for the 1.3U cable, or the $197US for the openport 2.0 cable then this is thread for you!
Please be aware that the openport 1.3U cable is required if you want to log/service the AYC & ABS, and if you want to be able to flash the MH7202 & MH7203 ECU’s then you will need the Openport 2.0 cable. This is purely a cheap solution for logging the engine ECU, nothing else.
This is a guide for creating an Engine data logging cable for $20AU. This in no way replaces the functionality achieved by using the Tactrix Open Port 2.0 cable but allows you to monitor your cars ECU, as well as use applications like Virtual Dyno Room to get an idea of your whp etc.
First off, you need to buy a cable. The cable of choice in this instance is the OBDII to USB cable often referred to as VAG-COM Cable. VAG-COM is short for Volkwagen Audio Group Communications. Essentially this cable has been developed for use with VAG cars for communicating with their ECU. However, as VAG use the same OBDII protocol as the Mitsubishi’s (and Subaru) of ISO 9141-2. This means that certain functionality provided by the MUTII protocol can be accessed using this cable.
Now the How To
First you will need to buy a VAG COM cable, one like this will do (the exact cable I bought)
Ebay Link
When you receive the cable, you will need to modify the cable to put the car into diagnostic mode. As you (may) have read elsewhere, to put the car into diagnostic mode you need to bridge pin 1 to pin 4 on the OBDII port. So to keep it simple, we will solder a wire between pin 1 and pin 4 on the cable so whenever you plug the cable in, you will be in diagnostic mode.
So, open up the cable by removing the four holding screws, and you will see as below (minus the speaker wire):
And the pins are marked from 1 - 8 (9-15 on the other side)
Then as you can see on my cable here, I have soldered some speaker wire between pins 1 and pin 4. (My reason for this is I use this cable on my Subaru also, for which I don’t need 1&4 bridged, so I have put in a switch. SO you just need to solder a single piece of wire between pins 1 and 4.)
So simply solder a piece of wire between pin 1 and pin 4, and put the cable back together and here is the finished product:
Then you will need the software.
There are 2 options when it comes to software.
First off is Mitsulogger v2.0. Its not the prettiest software around, but its very functional. It contains all the parameters that EvoScan does, however does not have the nice features like realtime graph, dashboard gauge layouts etc. It really is just for creating .csv logs - which really are all you need. It can be downloaded for free from here:
http://www.aktivematrix.com/blog/aktivematrix-useful-info/
If you use Mitsulogger, you will need to install the drivers for the cable. In which case, downloading ECU Flash and installing first will install the drivers: ECU Flash Download
Next is EvoScan, which is by far the most comprehensive software for use with our cars. It’s simple layout makes it well worth the while. You can purchase the software/licence from www.evoscan.com and download from the link following purchase.
To get EvoScan operational there is no need to install ECU Flash first as EvoScan comes with the drivers. Simply install EvoScan software BEFORE connecting your cable (as all drivers will install as part of EvoScan).
DO NOT install the drivers that come with the cable.
Then with the software installed, connect up the the OBDII port end to the OBDII Port. This can be found on the drivers side under the dash, just by your left knee, as seen here:
Then connect the USB to your laptop and start the software. You should now be connected and ready to log!
End Notes
The evolutionm thread containing the Virtual Dyno Room can be found here:
Download Virtual Dyno Room
Note that you just need to sign up to the forum to be able to download attachments.
I have continued the virtual dyno room discussion in the datalogging thread here.
Finally, if I have forgotten any steps, or are having troubles with the guide let me know.
Cheers
Lee
