Can't make a gas tune a COS?

[N0DIH]

I am having problems that I don't quite understand.

I have 3 separate installs of EFILive doing the same.

I open a .tun, one with a COS for it, and it won't show me any COS options.

Anyone see the same problem?

Current version of 7.5.

File is fresh from Holdencrazy/Tune Depot.

[Taz]

Not quite as simple as that ... read the Custom OS Upgrade Tutorial attached below.

COS files should be located on your computer with the EFILive software at C:\Documents\EFILive\V7.5\Bins\Custom OS.

For 2002 OEM OS 12212156 there are COS1, COS2, COS3, and COS5 systems available (ie. 0202000x).


Regards,
Taz

[N0DIH]

Ok, my bad, done some COS work with another tuner program and it was as simple as open the file you want and then choose what COS to convert it to.

And the DMax tunes I have messed with seem the same way in EFIL.

[ScarabEpic22]

Yea LS1 COSs are a little different in EFILive vs every other COS/DSPx for a Dmax, E38/E67. Have to flash the PCM with the COS first, then cal flash your original OS, then read it out and use that as your COS base.