EFI Live COS ???
Thread Starter
Joined: Nov 2001
Posts: 5,649
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From: Warr Acres, OK
EFI Live COS ??? I tried reading a 02 Vette today that has been previously tuned at an unknown shop. HP Tuners would read the file but would not open it because of an VIN/OS mismatch. I was able to ID the OS# with TC OBD2. I suspect it is an EFI Live COS. Can anyone with EFI Live experience verify if an OS ID 2030003 used on a 02 Vette is indeed an EFI Live COS?
Thread Starter
Joined: Nov 2001
Posts: 5,649
Likes: 9
From: Warr Acres, OK
Thanks. That is not an exact match of what it has in it. It is a Z06 so it started out with either GM OS 12221588 or 12593358. That OD ID 02020003 is close enough to what it has that it was probably tuned with EFI Live though.
Staging Lane
Joined: Nov 2007
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12593358= EFI Live OS 02040003
12221588= EFI Live OS 02030003
As mentioned you should be able use a Tech II and flash it back to stock if you don't mind starting from scratch.
Thread Starter
Joined: Nov 2001
Posts: 5,649
Likes: 9
From: Warr Acres, OK
The car seems to have a really good tune in it and is making close to 700 rwhp as it sits (twin turbo) so I really don't want to start from scratch. We're just going to add some ID2000 injectors ans switch it to E85. We've located someone local with EFI Live that's going to let us use it. This is not entirely my deal. Just helping a local shop.
