A91 & Recent 2021 Impossible to Tune / ECU manufactured after 2020/6 is locked? [WARNING: NO POLITICS]

[Tsar]

Bench unlock is for almost all GR Supra whether '20 or '21. (I've heard a report that very early models didn't even needed bench unlocking but cannot confirm) However, ECU dated in June (still unclear but some time around 6/7/20) and after is hardware locked and cannot be unlocked at this point in time. As I understand, this is not limited to supra but for all cars using Bosch ECU. And dates varies for different cars.

I can confirm that early cars didnt need any unlocks.

 

[Travelingsoldier]

thank you for all the replies. I’ll continue window shopping.

 

[fist302]

I have checked mine today and found out that it's 9/18/20 ?
So since life is too short to be stock, I went ahead and ordered a JB4, Catless DP, and a CAI

 

[delita1]

I have checked mine today and found out that it's 9/18/20 ?
So since life is too short to be stock, I went ahead and ordered a JB4, Catless DP, and a CAI

same, waiting to hear back on my 6/21/20 but i already ordered full exhaust and i'll just go the jb4 route as well.

 

[Value]

You guys are gonna like the JB4 and Dp/Turboback. Map 3 is solid

 

[BA9092]

I have checked mine today and found out that it's 9/18/20 ?
So since life is too short to be stock, I went ahead and ordered a JB4, Catless DP, and a CAI

same, waiting to hear back on my 6/21/20 but i already ordered full exhaust and i'll just go the jb4 route as well.

You guys are gonna like the JB4 and Dp/Turboback. Map 3 is solid

Anyone getting the EWG harness or is that just for blended fuels?

 

[delita1]

Anyone getting the EWG harness or is that just for blended fuels?

I will. Looks like you want it if you're running map 3

My biggest question is - best tire upgrade path post-tune? have seen some saying it's hard to put the power down post-tune on the stock SS tires

Hear a lot of good things about R888R's - are these fine as a year round street tire? (this car isn't my DD and is garaged, never sees rain/snow/etc.)

 

[BA9092]

I will. Looks like you want it if you're running map 3

My biggest question is - best tire upgrade path post-tune? have seen some saying it's hard to put the power down post-tune on the stock SS tires

Hear a lot of good things about R888R's - are these fine as a year round street tire? (this car isn't my DD and is garaged, never sees rain/snow/etc.)

Tires are my primary concern regarding adding more power since I'll be swapping to PS A/3+ next year. Hmmm...

 

[Value]

Anyone getting the EWG harness or is that just for blended fuels?

I didn’t get it. Spoke to botti and he said you don’t need it. Eventually I’ll have him do a custom map for me if they can’t unlock the ecu for a long time

I think if you run a E85 blend with the JB4 you need the ewg(Unless you have a custom map)

 

[delita1]

No go with my unlock on my 6/21/20. Looks like JB4 Map3 will be my best option for now.

 

[delita1]

You guys are gonna like the JB4 and Dp/Turboback. Map 3 is solid

Is this what you're running? I'm trying to get everything done at once, full exhaust/JB4. Out of curiosity, with the JB4 extra power it's putting down - worth going ahead and upgrading to 265/285 tires? I've heard that's the case with custom tunes, wanted to see if it was pretty much the same with a JB4 on map3, enough power to warrant the upgrade. Looking at swapping the PSS for the PS 4S and going up to 265/285 if it makes sense.

 

[dragonhunter241]

Anyone else do JB+?

 

[Value]

Is this what you're running? I'm trying to get everything done at once, full exhaust/JB4. Out of curiosity, with the JB4 extra power it's putting down - worth going ahead and upgrading to 265/285 tires? I've heard that's the case with custom tunes, wanted to see if it was pretty much the same with a JB4 on map3, enough power to warrant the upgrade. Looking at swapping the PSS for the PS 4S and going up to 265/285 if it makes sense.

Yeah,I’m running a turboback and I’m on map 3. A tire upgrade would def help since the torque is much higher now. But why not go 295/305s in the back?

I’m still on OEM tires. But I’m swapping them out when I get new wheels. I’ll be running 305s in the back

 

[delita1]

Yeah,I’m running a turboback and I’m on map 3. A tire upgrade would def help since the torque is much higher now. But why not go 295/305s in the back?

I’m still on OEM tires. But I’m swapping them out when I get new wheels. I’ll be running 305s in the back

Just going off what I hear on a more consistent basis. 265/285 seems to be pretty common, keeping the same ratio as stock 255/275.

 

[ReconAlex48]

Just FYI for the guys going piggyback and concerned about CEL. The downpipe sold on Supra store has the O2 sensor false tubes so they aren’t actually exposed to the uncatted exhaust fumes. This is the same kind of downpipe I ran on my last Evo to avoid CEL and the car ran great for 6 yrs before I sold it.