OS upgrade... from 12593555

[wayneosan]

Does this not have an option for a 2bar OS?

Thanks

[wayneosan]

8.1 litre and a blower. I am ready to put it on the dyno, but then didn't see an option for a 2bar system.

[Tordne]

It looks like there is supposed to be a COS series 051300xx for your OS. I can't see the actual .tun or .calx for this Os series, and I've left a message with Ross to confirm existence...

[wayneosan]

that's what I thought, but this is my first time and I have the PDF "how to upgrade to custom OS" open, but when I open the .tun file I want to upgrage and go to "select custom operating system", I don't see an upgrade option.

[Tordne]

Oh, the LS1 COS updates don't work through the Upgrade OS tab in the calibration.

I've just been speaking with Ross and unfortunately I have to advise that that OS is not going to be supported, and should not have been included in the Custom OS Upgrade documentation.

[wayneosan]

wow. that sucks. so, I have a built motor, blower, and need another actual ecu? I have a 2bar sensor installed and the scalar set and it runs, but, haven't strapped it down to dyno it.

what do you guys reccomend?

[Tordne]

Is the motor still in the stock truck or is this a custom car? If you want to run a COS the only thing you might be able to do is change the OS in the PCM with one that has a COS available.

[wayneosan]

this is a custom truck, but it still has the stock engine computer.

I was wondering if I could just load some kind of other OS.
I looked on the holden site and was nervous about loading up one that won't work with the 8.1 litre and the allison transmission.

are you guys able to load the tune I attached?

[Tordne]

The controller hardware is standard and can be reflashed with any OS intended ro run o that physical hardware. Your PCM is a 1MB LS1 PCM so you could load perhaps this file (http://www.holdencrazy.com/EFILive/T...(12587603).tun) which has a matching COS series 040730xx.

What you'd do is copy each table from your calibration across to the new one, then full flash it into the PCM.

[wayneosan]

I have downloaded and begun the flashing. We'll see in a few minutes how she goes.

I tell you, if I got flashed as many times as these ecu's, I'd be a happy man.