Controller Authorization

[Chevy366]

http://content.efilive.com/documents...horization.pdf
Will this be automated at some point?

[GMPX]

Possibly not, all tuners are in the same boat.

[ScarabEpic22]

Hmm this sucks, but it's just another hurdle to overcome to tune.

I get that the controller sends its Seed when being asked to read, then we can retrieve that and send it off, have a matching Key generated, import the Key, then read as per normal. I'm a little fuzzy on how the Authorization code dealer can generate an Authorization code based on the Seed sent? If they can generate a code, is there a reason the end-consumer cannot? I'm more curious than anything else!

[GMPX]

Hmm this sucks, but it's just another hurdle to overcome to tune.

Yes it does, but it wasn't our choice. But at least you can still program them (for now) unlike the 2017+ T87A TCM, that looks like it is closed off, done and dusted.

I get that the controller sends its Seed when being asked to read, then we can retrieve that and send it off, have a matching Key generated, import the Key, then read as per normal. I'm a little fuzzy on how the Authorization code dealer can generate an Authorization code based on the Seed sent? If they can generate a code, is there a reason the end-consumer cannot? I'm more curious than anything else!

Because it is our own internal system we use that has been trusted to one other person, I know people are probably thinking 'oh just a money grab', no trust me it is not that, we wish we never had to do this too. It has consumed over a month of programming and testing to this point and still requires manual intervention, we too have better things to be doing than workarounds.
The game has changed somewhat for 2017+, but we just need to accept that, be grateful we can still actually flash these controllers without pulling them apart (eg, Euro tuning) and continue on.

Cheers,
Ross

[S Phinney]

So who is this other person that you trusted?


Sent from my iPhone using Tapatalk

[GMPX]

Their details are in the document. I won't post it here because spam bots trawl for Email addresses on forums.

[ScarabEpic22]

Yes it does, but it wasn't our choice. But at least you can still program them (for now) unlike the 2017+ T87A TCM, that looks like it is closed off, done and dusted.


Because it is our own internal system we use that has been trusted to one other person, I know people are probably thinking 'oh just a money grab', no trust me it is not that, we wish we never had to do this too. It has consumed over a month of programming and testing to this point and still requires manual intervention, we too have better things to be doing than workarounds.
The game has changed somewhat for 2017+, but we just need to accept that, be grateful we can still actually flash these controllers without pulling them apart (eg, Euro tuning) and continue on.

Cheers,
Ross

Thanks for the explanation Ross, makes sense to me. And the T87A can't be read (or programmed)?! :( Not good to hear, I'm sure we'll run into issues reprogramming ECMs and the TCM needs to be tweaked as well but it cant be.

And yes, fortunately we haven't had to resort to pulling them apart (yet).

[Chevy366]

Yes it does, but it wasn't our choice.

Because it is our own internal system we use that has been trusted to one other person, I know people are probably thinking 'oh just a money grab', no trust me it is not that, we wish we never had to do this too. It has consumed over a month of programming and testing to this point and still requires manual intervention, we too have better things to be doing than workarounds.


Cheers,
Ross

Will new V8 units, when purchased, still be able to flash 2 controllers, in other words if you bought a V8 unit and go to tune a 2107 that requires the auth-code and seed will it be included in the purchase price, or is additional cost still needed?

[GMPX]

And the T87A can't be read (or programmed)?!

It can't be read, programming has a very nasty digital signature system in place. They've gone away from the traditional programming methods to something more like what Bosch do.

Will new V8 units, when purchased, still be able to flash 2 controllers, in other words if you bought a V8 unit and go to tune a 2107 that requires the auth-code and seed will it be included in the purchase price, or is additional cost still needed?

You will still be able to flash two controllers with the one VIN license, no change there. But the auth-code is an additional cost to the licenses, however as I mentioned above the T87A cannot be programmed at this stage so it isn't like you will need two Auth-Codes per vehicle.

[GMC-2002-Dmax]

Is it known yet or not if the newer Duramax will keep the current T87 or get this new masterpiece from GM ??