COS #3 to COS#5

[dirt_track_racer_81]

right now my truck has the COS #01270003 can i convert to a COS #5 for a camaro so i run the COS#5? just wondering if its possible..truck is a 2000 chevy converted to a 2002 pcm calibration

[TAQuickness]

If it matches up on the OS matrix (found in the custom OS tutorial) then yes. You might also want to check out the OS5 thread.

[bK]

right now my truck has the COS #01270003 can i convert to a COS #5 for a camaro so i run the COS#5? just wondering if its possible..truck is a 2000 chevy converted to a 2002 pcm calibration
There is only 2 base OS's that work with Custom OS5

Quote from : http://forum.efilive.com/showthread.php?t=2599&page=5 post #48

Just two to start with.
One for the Aussies to replace 12225074.
One for the 2002 F&Y bodies to replace 12212156
If you are already running a custom O.S based on one of those O.S's then all existing tunes are compatible.

Same process as the others, Full flash the O.S #5 tune in, then flash the cals only from the existing tune you are running, then read it out and save as your new O.S #5 file and adjust the new tables / parameters.

Setup suggestions.
A0003 - Set to disable for now until the tutorial is done (or you are feeling brave).
N20 monitor is done via the same input as the Valet mode, once it is grounded then the two compensation tables become active, although, there is two parameters to stop those two tables even if the N20 is on.

Good luck, let us all know how you go.

Download here -
http://efidownload.iqd.co.nz/software/GMPX/V5_OS_Final.zip


Cheers,
Ross