How To Flash Your RX3 ECU (So Far)
 

Alright Charles, here you go:

Hardware Needed:

Tactrix Openport 2.0 Interface - either the name brand version for $169:

https://www.tactrix.com/index.php?op...ed=1&Itemid=53

or one of the Chinese knockoffs for $50:

https://www.amazon.com/Yourshops-Ope...dp/B093L6MZG6/

Additionally, you are going to need a 6 pin to 16 pin OBD cable, in order to connect the Openport 2.0 to the OBD connector on the bike. Here are two that should work:

From AliExpress:

https://www.aliexpress.com/item/4001...3a994c4dIyFBBK

From Amazon:

https://www.amazon.com/exec/obidos/ASIN/B089GZ5NV6/

You will also need a computer running Windows 10, either a laptop or desktop, preferably a laptop, unless you have a desktop set up in your garage and a really long USB cable to connect the computer to the Openport 2.0 device.

Software Needed:

HUD ECU Hacker - which is free and available here:

https://netcult.ch/elmue/HUD%20ECU%20Hacker/

This will let you read the EFI map and download a copy from the ECU.

As far as connecting it up, you:

1.) Plug the 6 pin to 16 pin cable into the 6 pin RX3 OBD port.

2.) Plug the 16 pin connector into the Openport 2.0 device.

3.) Plug a USB cable into the Openport 2.0 device and plug the other end into one of the USB ports on your computer. It appears that the connection between the HUD ECUHacker software and Openport 2.0 device is sensitive to which USB port that you use on the computer, so you may have to try multiple ports until you find one that works.


From this point on, I'm not too clear on the further steps needed. It appears that you can read, copy, and send out the OEM EFI map to a tuner who will, for $30, adjust it per your instructions, and send you back the modified copy to be uploaded into the RX3's Delphi MT-05 ECU. But I'm not sure here, and it appears that this part has not been done successfully yet. I'll update this once we know more.


Hopefully this is enough to get you started.;)

First, you need a cable that connects to the service plug hidden by a plastic cover. https://www.aliexpress.com/item/4001...3a994c4dIyFBBK

Then you need some interface I have ELM 327 on USB or bluetooth and TACTRIX OPEN PORT 2.0 (RECOMMENDED) with each of these interfaces you can record log file, but only tactrix allows ECU mapping....https://www.aliexpress.com/item/1005...3a994c4djwEQpW

Then connect one of the interfaces to your computer and install the drivers are also available in the program HOD ECU HACKER always use the USB port in which the first time you use it, it acts as a Port COM.

When you manage to do this, set the interface type in the HOD ECU HACKER program remember to run the program as administrator.

Then turn the key to the first position remember to have the emergency switch on and the side foot folded the motorcycle should be ready to start.

Now press the connect button the motorcycle should connect then select start recording and start motorcycle engine now everything is recording, when you think that is enough turn off the motorcycle and press stop recording the file has been saved .

Now in the HOD ECU HACKER program press play log file from this point you can check the parameters and manipulate the recording time using the buttons or slider.

In the dashboard section you can check the parameters, and in the graph section if you press create graph you will get a graph of the performance of the components.

If you want to download the bin. file injection maps or upload the new one you do everything as before but do not start the motorcycle engine , do everything with the engine turned off and do not press the connect button, the program will connect itself when you press the download button, the same will happen when you want to upload the bin file remember to always upload only the calibration table area, if you upload the tables and software, and something goes wrong ECU turns into a brick it can be saved, but it is better to avoid such a situation.

I hope I was able to help you charlie.

You have. I've ordered the parts to diagnose future issues. In the meantime it appears cleaning the IAC valve has fixed my odd idle issue.

Charles.

Nice!

Glad it was something simple, man. +1 for the jump in on connectors; I was wrong, 6-pin! :x Now I know for my RX3! (sometime..)

Ugh, so the problem came back. All the diagnostic parts are on order at least. They should be here Saturday. Talked to Joey at CSC and he thinks it's the IAC stepper motor so I just went ahead and ordered one too. That won't arrive until next week sometime.

Charles.

Bike finally threw a code. P0132. Looks like I may actually need an O2 sensor.