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

if they wanted to keep the stock Transmission programming.

The original TCU tune was more for shift points and towing. It was not meant to address the clunky shifting that Lexus is trying to fix. I'm assuming that once VF Tuner has a hold of the new flash, they will see what Lexus did and possibly add their own twist to it.

That is why I am patiently waiting for someone to send an updated Read file to them. I don't have time to drop of my GX at the dealer for their shenanigans
 
Good Evening everyone.

We are working on a new updated tune for everybody. We have the "TSB" reflash along with the newer version (there is a version newer than that shipping on some vehicles).

It looks like Lexus has introduced new load limiters onto these new calibration versions that limit power. We are working on that now.
Thank you
 
Good Evening everyone.

We are working on a new updated tune for everybody. We have the "TSB" reflash along with the newer version (there is a version newer than that shipping on some vehicles).

It looks like Lexus has introduced new load limiters onto these new calibration versions that limit power. We are working on that now.
Thank you
Thanks for your hard work. Really excited to get the new tune, I was waiting since I didn't want to go through the flash process again.
 
Good Evening everyone.

We are working on a new updated tune for everybody. We have the "TSB" reflash along with the newer version (there is a version newer than that shipping on some vehicles).

It looks like Lexus has introduced new load limiters onto these new calibration versions that limit power. We are working on that now.
Thank you
What exactly does a load limiter mean in regards to power ?
 
Good Evening everyone.

We are working on a new updated tune for everybody. We have the "TSB" reflash along with the newer version (there is a version newer than that shipping on some vehicles).

It looks like Lexus has introduced new load limiters onto these new calibration versions that limit power. We are working on that now.
Thank you
Would that be causing the check engine lights on full throttle?
 

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