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Mk V Supra - My Evo's Replacement?

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Old Aug 31, 2021 | 10:53 AM
  #301  
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Originally Posted by Lumpy Sticks
I am still loving the car. I havent been back to the track since I got the wheels and tires to test it out but all my mountain runs say its a huge difference. Still have some springs I need to slap on it one of these day too which everyone says helps with camber (since its non adjustable). It really is nice to just be able to hop in the car and go without having to worry about anything.

The one thing I dont like about it is the tuning options as of right now. I have 0. The only thing I can do is a piggyback system which I dont like. You as a tuner understand. Trick the ECU to see less boost while not adjusting timing or fuel.... ya not my thing. There is an ECU update going around right now that is supposed to extra lock people out from being able to tune it. Supposedly the early models that you can tune are getting locked out as well. That will be verified in the next week or two.

What part of the front dont you like? Have you seen one in person yet? I think the car looks very different in person than in a picture. Its hard to capture all the curves in a flat picture.
Yea, the slush box and the lack of ability to tune are the two things keeping me away. I have seen them in person, they do look much better, which is what got me interested in them more. However, the non ability to tune would be a deal breaker for me. I would get the RS3/TTRS over the Supra for just this reason.

The front is way too pointy and snorkel-like. The darker colors hide it more. I think the dark grey like you have is the best color for the Supra, in my opinion. Dark enough to hide the front but the black accents still pop. Black is black. I will never own a black car ever again. Plus the black hides the curves too much.
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Old Aug 31, 2021 | 11:28 AM
  #302  
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It was only a matter of time before ECUs started using modern firmware integrity protection. Outside of the automotive world we've had plenty of options for firmware signing and verification at the hardware level for many years. For a while I assumed auto manufacturers were deliberately leaving ECUs vulnerable to reflashing as a nod to enthusiasts.

Once they start cryptographically signing firmware and verifying the entire boot chain, it's a different game. The only two options are to find some new vulnerability in the hardware/software (which is an order of magnitude harder than previous protections, if not more) or to hope that some disgruntled Bosch/Toyota engineer leaks the signing keys on to the internet. Or more realistically, some disgruntled Bosch/Toyota engineer gets bribed enough by a flash maker to sell them out the back door.

I can see how warranty claims on an iconic tuner car like the Supra could get out of control quickly. I remember the early days of the Evo where several businesses rushed in to offer disastrously bad tunes for the Evo.

Would be cool if Toyota offered a system to buy an unlock for the ECU in exchange for forfeiting the drivetrain warranty. I doubt many people would take that option in the early years, but it would at least free these up for tuning at the end of the warranty period.
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Old Aug 31, 2021 | 11:44 AM
  #303  
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Did some digging: Looks like one company claims to have found a vulnerability that allows reflashing these ECUs: https://femtool.com/ Note that's the flashing tool, not the tune.

Not sure if it covers the latest round of firmware updates mentioned above, but I'd expect the tunes to start trickling out for some Supra models at least.
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Old Aug 31, 2021 | 12:10 PM
  #304  
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I know I am getting old when I am shopping cars that are fast enough without needing to be tuned.
I like the idea of not having to tune anything, not having to change stuff, just leave it alone and drive. Throw on an exhaust and maybe an intake to get the sounds I want and done. I'm okay with wheels, tires, and suspension stuff.
No more smog hassles, etc.
There's a lot of cars out there, right now, that fit this bill pretty well.
A supra would be right up there on my list.
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Old Aug 31, 2021 | 12:13 PM
  #305  
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Originally Posted by kaj
I know I am getting old when I am shopping cars that are fast enough without needing to be tuned.
I like the idea of not having to tune anything, not having to change stuff, just leave it alone and drive. Throw on an exhaust and maybe an intake to get the sounds I want and done. I'm okay with wheels, tires, and suspension stuff.
No more smog hassles, etc.
There's a lot of cars out there, right now, that fit this bill pretty well.
A supra would be right up there on my list.
I hear you but the big part of the fun for me is learning different ECUS and tuning them, so it has to be part of the package for me. Every single car I have owned since the 90's I have tuned in some form. Lol.
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Old Aug 31, 2021 | 12:14 PM
  #306  
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Originally Posted by razorlab
Yea, the slush box and the lack of ability to tune are the two things keeping me away. I have seen them in person, they do look much better, which is what got me interested in them more. However, the non ability to tune would be a deal breaker for me. I would get the RS3/TTRS over the Supra for just this reason.

The front is way too pointy and snorkel-like. The darker colors hide it more. I think the dark grey like you have is the best color for the Supra, in my opinion. Dark enough to hide the front but the black accents still pop. Black is black. I will never own a black car ever again. Plus the black hides the curves too much.
You cant hate on the trans until you have driven one. I was the same way as you. Now its going to be hard for me to go back to a manual for a track car. I still have 4 cars that are manual to get my fix anyways.

My dad sold his ZL1 last week and has been looking for a new replacement. So far its looking like the TTRS is going to be next. He really wants a 2019 ZR1 but cant find one since they are so rare.

Originally Posted by Construct
It was only a matter of time before ECUs started using modern firmware integrity protection. Outside of the automotive world we've had plenty of options for firmware signing and verification at the hardware level for many years. For a while I assumed auto manufacturers were deliberately leaving ECUs vulnerable to reflashing as a nod to enthusiasts.

Once they start cryptographically signing firmware and verifying the entire boot chain, it's a different game. The only two options are to find some new vulnerability in the hardware/software (which is an order of magnitude harder than previous protections, if not more) or to hope that some disgruntled Bosch/Toyota engineer leaks the signing keys on to the internet. Or more realistically, some disgruntled Bosch/Toyota engineer gets bribed enough by a flash maker to sell them out the back door.

I can see how warranty claims on an iconic tuner car like the Supra could get out of control quickly. I remember the early days of the Evo where several businesses rushed in to offer disastrously bad tunes for the Evo.

Would be cool if Toyota offered a system to buy an unlock for the ECU in exchange for forfeiting the drivetrain warranty. I doubt many people would take that option in the early years, but it would at least free these up for tuning at the end of the warranty period.
Ya I heard something about signing and verification being the main issue. Supposedly someone out of country can tune them but you have to send your ecu to them. No other way. Visconti supposedly was close to having something working but who knows whats going to happen with this recall/reflash.

As of right now, I can do the JB4 system but I have heard a lot of bad things, like blown up engines... Warranty claims are now interesting with all the new technology. They say they can detect any modification even if a tune isnt involved. Pretty much if the car can accelerate faster then stock, they will know. I have not heard of anyone getting a warranty declined except one guy who posted everything on FB and someone called all the local dealers telling them to watch for him to come in with a blown engine.
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Old Aug 31, 2021 | 12:24 PM
  #307  
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Originally Posted by Lumpy Sticks
You cant hate on the trans until you have driven one.
Aren't there something like six million ZF transmissions out there?

Is the 8HP the same one they use in like every single auto BMW and every Audi from the A4 on up?

I drove a Alfa Romeo Giulia with one and it was meh. However, from the vidoes I have watched of the Supra, it does seem to shift faster. I heard the flappy paddles are laggy though.
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Old Aug 31, 2021 | 12:39 PM
  #308  
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ZF has a hybrid version of the 8HP that BMW is using. Might make for an interesting upgrade path in the future.
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Old Aug 31, 2021 | 12:51 PM
  #309  
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Originally Posted by razorlab
Aren't there something like six million ZF transmissions out there?

Is the 8HP the same one they use in like every single auto BMW and every Audi from the A4 on up?

I drove a Alfa Romeo Giulia with one and it was meh. However, from the vidoes I have watched of the Supra, it does seem to shift faster. I heard the flappy paddles are laggy though.
I have no idea what other cars use the trans. I am not a BMW or Audi guy nor have I driven any other vehicle with the ZF8.

There is paddle lag in normal mode. I coded in Sport Plus mode for the trans and its much better. Nearly instant. When in normal mode, shifting in general is slow and smooth. Sport and Sport plus gets you the fart sound between shifts.
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Old Aug 31, 2021 | 02:19 PM
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Originally Posted by razorlab
Aren't there something like six million ZF transmissions out there?

Is the 8HP the same one they use in like every single auto BMW and every Audi from the A4 on up?

I drove a Alfa Romeo Giulia with one and it was meh. However, from the vidoes I have watched of the Supra, it does seem to shift faster. I heard the flappy paddles are laggy though.
a version of this transmission is in everything and its sister, but as I understand it they vary hugely based on how they're tuned. and every car/truck has its own tune for this trans
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Old Aug 31, 2021 | 06:20 PM
  #311  
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Originally Posted by kaj
I know I am getting old when I am shopping cars that are fast enough without needing to be tuned.
I like the idea of not having to tune anything, not having to change stuff, just leave it alone and drive. Throw on an exhaust and maybe an intake to get the sounds I want and done. I'm okay with wheels, tires, and suspension stuff.
No more smog hassles, etc.
There's a lot of cars out there, right now, that fit this bill pretty well.
A supra would be right up there on my list.
yes, we live in California, it’s always in our minds when come to tune the car. But somehow when I looking at the new car, I always look at the potential of a car when tune. I do get excited about the new Z, the tuner market will be crazy.
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Old Aug 31, 2021 | 06:43 PM
  #312  
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Originally Posted by razorlab
I hear you but the big part of the fun for me is learning different ECUS and tuning them, so it has to be part of the package for me. Every single car I have owned since the 90's I have tuned in some form. Lol.
If it's a hobby, then I totally get it. If I didn't live in CA then maaaybe if change my mind.
it's just that I've gotten spoiled because, knock on wood, the only thing my Evo has needed in the past three years is oil changes. granted, everything is brand-new, LOL Its been SO nice, specially after reading all these threads about needing spare motors and rebuilding stuff.

Originally Posted by Lumpy Sticks
. Sport and Sport plus gets you the fart sound between shifts.


Originally Posted by Mivec4G
yes, we live in California, it’s always in our minds when come to tune the car. But somehow when I looking at the new car, I always look at the potential of a car when tune. I do get excited about the new Z, the tuner market will be crazy.
I do too, for other people LOL
I really like seeing what people do with cars, and I see a ton of potential in the 400Z. I've been thinking long and hard about getting rid of the Evo for a supra or the Z, after finally reading about it.
Still, I would leave all the modifying and tuning to other people. I would prefer to leave it alone.

Last edited by kaj; Aug 31, 2021 at 08:53 PM.
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Old Aug 31, 2021 | 07:27 PM
  #313  
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we don't know anything about the tuning potential of the 400Z ecu. for all we know its completely locked down... or as open as the evo's...
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Old Sep 1, 2021 | 12:45 PM
  #314  
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Originally Posted by Lumpy Sticks
There is paddle lag in normal mode. I coded in Sport Plus mode for the trans and its much better. Nearly instant. When in normal mode, shifting in general is slow and smooth. Sport and Sport plus gets you the fart sound between shifts.
Can you also code out the BS crackle tune crap too? I loath that crap and it pains me that now OEMs are adding it to their cars.
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Old Sep 1, 2021 | 01:18 PM
  #315  
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Originally Posted by razorlab
Can you also code out the BS crackle tune crap too? I loath that crap and it pains me that now OEMs are adding it to their cars.
Unfortunately, no. The crackles on the 2020 models are bad. The 21s are by far better and only do it on free revs. Driving around town, its rare to hear and wont crackle unless you down shift and its coasting down from 5k. I think if you get the JB4 piggyback, you can turn it off.
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