VF Tuner ECU/TCU Tuning for the GX550 (2 Viewers)

VF Tuner, do I also need a "VF Tuner Toyota Gen4 CAN Connect Cable 3.5L GX550" or the "VF Tuner Phone Wiflash Kit - GX550" is all required for the pre-made mappings for 89, 91 and 93 octanes/ transmissions.

Also the descriptions of the CAN Connect Cable are contradicting. Could you please confirm if it is for the GX550 3.5L in the US. Thanks.
 

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VF Tuner, do I also need a "VF Tuner Toyota Gen4 CAN Connect Cable 3.5L GX550" or the "VF Tuner Phone Wiflash Kit - GX550" is all required for the pre-made mappings for 89, 91 and 93 octanes/ transmissions.

Also the descriptions of the CAN Connect Cable are contradicting. Could you please confirm if it is for the GX350 3.5L in the US. Thanks.
Get the laptop + phone kit it comes with everything you need. I'm doing my 93 octane flash tonight.


They've also simplified the activation and downloading of the tune. They now have a calibration/tune downloader in the software built-in.

All they need now is to update and provide clear instructions for each vehicle they offer.

Screenshot 2026-09-09 at 3.06.02 PM.webp
 
Get the laptop + phone kit it comes with everything you need. I'm doing my 93 octane flash tonight.


They've also simplified the activation and downloading of the tune. They now have a calibration/tune downloader in the software built-in.

All they need now is to update and provide clear instructions for each vehicle they offer.

View attachment 24485
Thank you! Good luck flashing your GX550 tonight and let us know how it goes.
 
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Still no tracking update for the UPS shipping notice I had received at ChrisHTurner@gmail.com. And are you saying I should have received a 2nd shipping notice from DHL?
Correct. I will get the tracking but you will also get notified by text message. I have confirmed with James, it's in UPS hands.



Regarding AUS cars, we are making Direct ECU connectors. The wiring diagram for AUS cars simply doesn't align with what's in the actual car. Makes no sense.

Also we have received requests to make AGM Battery version files. So we are doing that too (higher voltage charging)
 
Correct. I will get the tracking but you will also get notified by text message. I have confirmed with James, it's in UPS hands.



Regarding AUS cars, we are making Direct ECU connectors. The wiring diagram for AUS cars simply doesn't align with what's in the actual car. Makes no sense.

Also we have received requests to make AGM Battery version files. So we are doing that too (higher voltage charging)
An AGM battery tune would be perfect for these trucks and I would imagine easy
 
Get the laptop + phone kit it comes with everything you need. I'm doing my 93 octane flash tonight.


They've also simplified the activation and downloading of the tune. They now have a calibration/tune downloader in the software built-in.

All they need now is to update and provide clear instructions for each vehicle they offer.

View attachment 24485


We are working on clear instructions for everything
and we have some video guides:




 
Our AGM battery tunes should be ready next week.
We built an entire voltage management tool into the software that references ODYSSEY batteries exact voltage regulation guide to ensure 100% perfect voltage control.


We will need to know which battery you have

 
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