Current OS not available for 3Bar

[MiniTubbedNova]

Hey guys,

First post, but lots of reading I have done. I cant figure this one out.
I have a 2001 GMC Sierra harness and ECM in my Nova. Im doing a turbo setup, so wanted to go to 3bar right from the get go since my plans are in the 18-20 PSI range. I read entireECM, Licensed the ECM, went to go to enhancements and only 2bar was available. Now i didn't run the enhancement for fear of loosing more credits.

Now what are my options to either switch to an os that will work on theECM, or anotherECM.

I would like to just keep this ECM, and not have to loose any more credits (minus the ones i plan on spending for enhancement) How ever if spending 2 more credits is needed i can deal.

Attached are my bone stock file and my file for my start up with the zo6 cam.

Thanks for the help.

[MikeOD]

You need to update your software to the absolute newest version...go to the customer center and download 2.24 again...OS enhancements are now free.

After you do that, you should find a 2002 file to use...they're compatible with your PCM (same hardware) and there are many improvements from GM as well as 3 bar support. I'd recommend going to 2002 12212156.

It will cost you 2 credits to change to the 2002 OS, but it will be free to enhance it to 3 bar.

[MiniTubbedNova]

Thank you! Now I download a 2002 stock file and register it when i flash to my ecm, correct? I have to do an entire write?

[MikeOD]

Yes you have to do a write entire, and yes it should ask you to register it when you open it. Make sure it's already correct for your transmission setup so you're not in a bind with the wrong file to start from.

I'd register it, and then apply the 3-bar enhancement, then I'd do the write entire to the PCM...if you flash in the stock file with a write entire first, you have to again when you apply the 3-bar enhancement, and there's no sense in doing that twice, it takes a while, and if you unplug something while it's writing, or your laptop has a problem, you're screwed...so why risk it twice when you only need to risk it once?

[MiniTubbedNova]

Thank you MikeOD, I REALLY appreciate then insight.

[Monty]

Hi i have the same problem as OP but with a 2004 6.0.. so what i need to do is just find any 2004 6.0 file from the Tune Repository and do as you told OP or do i need the same OS as mine, cause i found a file in the TR that had the same OS as mine but it too only had the 2bar.. so i dont need a segment swap, but if i did i would have to use it from the same OS, but since i need to change my OS i can just use any OS from a P59 controller ?

sorry im just so confused.. been trying to figure this out since 2013...

neways thanks Monty