Help with first COS upgrade

[RPE-tuning]

Hi,

I have a hot LS1 with ITBs and want to use the COS5 for its TPS VE capabilities

If I understand correctly I have to full reflash the 12225074 OS File and than reflash the original tune file on top, however I cannot find the 12225074 OS.

Can someone help me? Its an automatic.

THANKS!

Regards,
Paulo

[RPE-tuning]

Ok that wasn't so hard... I found it here

https://www.dropbox.com/sh/4ydh5wltk...+12225074).tun

My car currently has a 09381344 OS so not compatible with the upgrade. I believe I need to copy the tables to the 12225074 File but there are many tables that don't match, more parameters, etc... Is this a problem or should I just change what I can and leave the rest alone?

Regards,
Paulo

[joecar]

This is what I do:

I flash in the new OS and see if the engine runs... most times it runs reasonably...

the few that it runs poorly I then tune it a little and/or copy the tables that are significantly different...

either way, it's going to be tuned again with COS5.

[RPE-tuning]

Joecar,

Thanks yet again for your help- however cannot full flash either the 1222507 or the COS5 - it just does not allow me to select the full flash button.

Any idea why that is?

[joecar]

Did you read the 12225074 file from that PCM...?

[joecar]

Disconnect the scantool.

[RPE-tuning]

Scan tool was not connected.

Original ECU file is 09381344 . 12225074 file came from the dropbox link I posted...

[joecar]

If 12225074 was not read from PCM then the PCM is not 0411...

[RPE-tuning]

Excuse me but I didnt get that. What do you mean with 0411?

Am I trying something impossible?

[joecar]

part # 12200411 PCM.


If 09381344 was read from your PCM, then 12225074 should flash right in...

try again doing full flash of 12225074... post screenshot.