OVTune

Drake7

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Does anyone know if the tune will void warranty from dealer?
 

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I found this from Mat, the OVTune dude.

The tool we use mimics OEM TechStream Flashing, while correcting the checksum. Detecting the tune is impossible. Toyota does not even have a detection tool because they aren't even aware people are tuning them. In terms of older ECUs (sub 2016+ new logic) the ECU cannot even be READ by OBD, The dealership can see codes, freeze frame data, and calibration ID, literally nothing else. We have confirmed this with several master level techs AT dealerships. Toyotas way of "preventing tuning" has made it impossible for them to actually investigate tuning.

I was at the dealership today speaking with the folks about remapping the LC500 and getting access inside the ECU and they are not even aware it's possible and actually encouraged us to develop this for the LC500.



the 16+ tacoma ECU can be flashed as many, many times. You can flash your tune, back to stock, back to your tune, back to stock every time you go to the dealer if you wish to do so.
 

Drake7

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Awesome man thanks for the information. Just wanted to check as I barely have any miles on my 18. But I don’t like the constant downshift as most of the other 3gs on here. Looks like I’ll be getting that tune. Saw that you were getting it when it comes out. Let me know how you like it.
 

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Awesome man thanks for the information. Just wanted to check as I barely have any miles on my 18. But I don’t like the constant downshift as most of the other 3gs on here. Looks like I’ll be getting that tune. Saw that you were getting it when it comes out. Let me know how you like it.
Will do. Says it will be here the Friday after Xmas. Will report back that Saturday.
 

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I've been seriously considering this tune. I hate that my truck won't use 5th or 6th in cruise on the highway above 70, and the low RPM performance on and offroad is hot garbage.
 

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I've been seriously considering this tune. I hate that my truck won't use 5th or 6th in cruise on the highway above 70, and the low RPM performance on and offroad is hot garbage.
I forgot if you’ve regeared or not?
 

Victory4x4

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I forgot if you’ve regeared or not?
Yes, 4.88s. Would have done the deeper gears if they were available at the time.
 

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Yes, 4.88s. Would have done the deeper gears if they were available at the time.
I was planning on the 5.29s when I get 35s anyway, but now I definitely know to do 5.29, lol.

I think you should try the tune. It will probably help at least with the shifting/cruise.
 

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Does anyone know if the tune will void warranty from dealer?

I found this from Mat, the OVTune dude.


Just an update, the tune being indetectable is incorrect. The older versions of the tune we're undetectable (1.02, 1.03, 1.04, 1.04r), but the newest release (1.05) will be detectable by the dealership.

To create the newest release of 1.05, Mat had to modfy the shift and engine management tables enormously. He stated in the last few days on the TW thread that due to such an enormous changes in the management that he decided to change the way the ECU and TCU identify themselves when hooked up to a scanner. The flashed ECU and TCU used to identify themselves the same as the factory tune. Now with 1.05 they will not, therefore he is now recommending users flash to stock anytime they go to the dealer for warranty work etc.


The official IDs for 1.05 will be as follows:

"OVT" ---- tune
"1-05" ---- version
"93" ------octane version

Thanks

View attachment 3054567

A user then questioned why the change.

You know that with the previous revisions the calibration ID would stay the same, even OVtune would say that there was no need to flash back when taking the truck to the dealership, now he changed the calibration ID and he's recommending that we flash back before going to the dealership, I just wonder why he's doing it differently now with 1.05

The reason is because we have custom patched the ROM, as a result the code and tables are significantly different, so we want to designate it this way.

And then another user then questions if you were already chaging the code before, what's different now that required a different designation.

This was before we modified hardcode (not just data sections) but actual code / lookup addresses / modified sections of memory, how the processor allocates table size in memory, etc.

Does anyone know if the tune will void warranty from dealer?
I found this from Mat, the OVTune dude.
Just an update, the tune being indetectable is incorrect. The older versions of the tune we're undetectable (1.02, 1.03, 1.04, 1.04r), but the newest release (1.05) will be detectable by the dealership.

To create the newest release of 1.05, Mat had to modfy the shift and engine management tables enormously. He stated in the last few days on the TW thread that due to such an enormous changes in the management that he decided to change the way the ECU and TCU identify themselves when hooked up to a scanner. The flashed ECU and TCU used to identify themselves the same as the factory tune. Now with 1.05 they will not, therefore he is now recommending users flash to stock anytime they go to the dealer for warranty work etc.


The official IDs for 1.05 will be as follows:

"OVT" ---- tune
"1-05" ---- version
"93" ------octane version

Thanks

View attachment 3054567

A user then questioned why the change.

You know that with the previous revisions the calibration ID would stay the same, even OVtune would say that there was no need to flash back when taking the truck to the dealership, now he changed the calibration ID and he's recommending that we flash back before going to the dealership, I just wonder why he's doing it differently now with 1.05

The reason is because we have custom patched the ROM, as a result the code and tables are significantly different, so we want to designate it this way.

And then another user then questions if you were already chaging the code before, what's different now that required a different designation.

This was before we modified hardcode (not just data sections) but actual code / lookup addresses / modified sections of memory, how the processor allocates table size in memory, etc.
 
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Tyler

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Thank you for the clarification. That’s a lot of good info in one post.
 

Mr. Nobody

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I've been nerding out on that thread hard for the last few weeks keeping up with all the lastest 1.05 news. Spent the previous couple months reading it from start to finish. Might as well share what I learned.
 

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when I need someone to look through pages of information I'm going to call you to do it. ;)

I've been nerding out on that thread hard for the last few weeks keeping up with all the lastest 1.05 news. Spent the previous couple months reading it from start to finish. Might as well share what I learned.
 

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when I need someone to look through pages of information I'm going to call you to do it. ;)

I can easily be paid in good beer. ?
 

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OK, I broke down and ordered the tune. After doing an intake and exhaust the truck is even more annoying to drive for some reason. I think now it's because I can "hear" it being dumb :p
 

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OK, I broke down and ordered the tune. After doing an intake and exhaust the truck is even more annoying to drive for some reason. I think now it's because I can "hear" it being dumb :p
Lol, definitely a justifiable reason! Looking forward to hearing what it will do for 35s and 4.88s.