Car has previous unknown platform stage 1 tune, am I clear to apply new MHD tune?

[Uncle Awesome]

I have a new to me 2020 Supra 3.0 & I was able to contact the previous owner who told me that the owner previous to him had a stage 1 tune applied but is unaware of what platform. I am about to purchase MHD for an OTS stage 2 tune (mods=catted dp, CAI, charge pipe, full exhaust) but I wanted to know if the new MHD tune will simply overwrite what is previously there or do I need to do anything special to the ECU beforehand? I didn't want to buy the tuning license & then realize I needed to have a bench unlock or somthing done first. Thanks in advance!

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[yellowsupra20]

I have a 2020 also with the basically the exact same mods and just purchased the MHD license last week only to find out I need a bench unlock.

I’m new to the Supra platform but I’m guessing you would need the bench unlock also. I’m pretty sure I read MHD manual that reflashing back to stock re-engages the lock. You can download the free MHD app and check the lock status, although you will need to purchase the OBD adapter.

 

[Thraxbert]

I have a new to me 2020 Supra 3.0 & I was able to contact the previous owner who told me that the owner previous to him had a stage 1 tune applied but is unaware of what platform. I am about to purchase MHD for an OTS stage 2 tune (mods=catted dp, CAI, charge pipe, full exhaust) but I wanted to know if the new MHD tune will simply overwrite what is previously there or do I need to do anything special to the ECU beforehand? I didn't want to buy the tuning license & then realize I needed to have a bench unlock or somthing done first. Thanks in advance!

I have a 2020, early enough that it did not need a bench unlock. I originally tuned with BM3. Since that time, I simply overwrote BM3 with Ecutek, and overwrote Ecutek with MHD+.

Once the car was unlocked and had a tune, I never flashed back to stock and I never had to re-unlock the ECU.

 

[stormgreysupra]

You can just override it with your new MHD map.

 

[Uncle Awesome]

I have a 2020 also with the basically the exact same mods and just purchased the MHD license last week only to find out I need a bench unlock.

I’m new to the Supra platform but I’m guessing you would need the bench unlock also. I’m pretty sure I read MHD manual that reflashing back to stock re-engages the lock. You can download the free MHD app and check the lock status, although you will need to purchase the OBD adapter.

I have the MHD OBD adapter on its way, I'll make sure to check the lock status first. Thanks!

 

[Uncle Awesome]

I have a 2020, early enough that it did not need a bench unlock. I originally tuned with BM3. Since that time, I simply overwrote BM3 with Ecutek, and overwrote Ecutek with MHD+.

Once the car was unlocked and had a tune, I never flashed back to stock and I never had to re-unlock the ECU.

This is what I was hoping for! Thanks for chiming in with your real world experience in doing it.

 

[razorlab]

I have the MHD OBD adapter on its way, I'll make sure to check the lock status first. Thanks!

Just know that sometimes it will say bench unlock needed when it really doesn't. Mine still states Bench even after flashing it like 500x.

 

[S2k]

I would just buy the MHD license and try it, and in the event it does need a bench unlock (which sounds unlikely) purchase their unlocker module.

https://www.bimecu.com/product-page...ZXUNX82notbDBiWAHBk-E7MfmNeJYn75oo-MIrwV1XOpc


If you drive to the UK you can use mine! ?

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