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  • 2017 Bluetooth V6.1 Edition for Android with wide band O2 connection, wide band AFR reading & adjustment on the fly!...
  • 2017 Bluetooth V6.1 Edition for Android with wide band O2 connection, wide band AFR reading & adjustment on the fly!...
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 Product Description



The 2017 38770-K26-003 Bluetooth V6.1 Yuminashi Stand-alone ECU / Datalogger is the replacement for the formal 2016 V8.9 generation and a serious jump forward on quite many fields!...

First of all is the new 2017 V9.1 series is compatible with multiple engines such as the MSX125/GROM125 - MSX125SF/GROM125SF - HONDA MONKEY 125 & HONDA SUPER CUB C125.
This is a relief any MSX/GROM and SF tuner.

Secondly, and this is the serieus jump forward is in the fact that the new 2017 V6.1 has a Bluetooth connection to make tuning possible on the smart phone.


This means that your wide band O2 gauge can read wide band AFR data while you are driving on your Android system!!


This means also that you can see the AFR ratio in each and every field, and that you are able to adjust/correct these fields on the fly with your Bluetooth Android system!
This eliminate basically the need for a dyno since you are able to make all these correction while you are driving and this based on real life load conditions like uphill driving, or facing a headwind, etc... 


While the software can run with the stock Honda narrow band O2 sensor, it's absolutely useless to start tuning based on the stock narrow band O2 sensor.
We strongly suggest not to do so since it's a total waste of time and money if you are doing so.

The stock 1 volt narrow band sensor isn't able to read accurate AFR reading, so the results you will see on your screen will be far away from accurate/reality with possibly serious engine damage as result!...

If you don't have a wide band O2 gauge yet, then we like to recommend the Innovate MTX-L gauge (please click the link in yellow, this device is not supplied by our company).
This California based company has a basic no nonsense device which can take a lot of vibrations, it's perfectly visible with daylight and is it's just perfect to do the job compared to others we tried...


It's also very easy to connect this gauge to our standalone ECU.
You only need to connect the yellow wire from the MTX-L gauge to the green wire from our standalone ECU
, and after a right click on the AFR meter from the program you need to select "wideband".

Once you did this you can start your engine and see exactly next to each value in the map how much the AFR ratio is from any particular spot in the map and like this it becomes really easy to know if you have to increase or decrease the percentage from that particular value in the map to get your optimal AFR target.

If you have set your perfect map, then keep in mind that your AFR ratio will change based on the temperature.
If it's starting to get colder or warmer compared to the temperature when you had set up your map.

If you don't have an Android phone, then you can download the tuning program below, open the the software on your computer (you need to use the USB tuner Cable for that, software is free), go to "enrichment correction" and enter a value based on the actual temperature to get your entire map back like it was when you had set up the map.

Like this you are able to correct and set up your standalone ECU to run your tune day in, day out.




● Please open this PDF file and use it as a guide to gain both, maximum performance and maximum protection against engine knock (very important). 

**Click this link to download the tuning program manual in PDF file...

             Driver install software (1.6M)



                  2017 ECM-BLUETOOTH V9.1 Tuner Setup software 2017 (1.97M)

**Click on this link to download the .msi file needed to install the tuning program.

Free worldwide shipping with DHL Express is included in the price quotation!..
(Exception for Russia, Brazil, Canary Island and French Polynesia, they will be served with free shipping by the Express Postal service)

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