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catman3126
July 7th, 2011, 09:15 AM
Where do I find the custom operating system tune for the speed density tune for my LS1? i see on the intro page for efi live it says efi has a custom OS for the SD tune? thanks
joecar
July 7th, 2011, 11:36 AM
Where do I find the custom operating system tune for the speed density tune for my LS1? i see on the intro page for efi live it says efi has a custom OS for the SD tune? thanksWhich year/model/vehicle...?

Have you looked at the table of OS id's in the COS upgrade tutorial...?
catman3126
July 9th, 2011, 02:17 AM
Its a 2000 ls1 ws6 engine. from a trans am manual transmission, i see the list of COS but how do i know which one to pick?
joecar
July 9th, 2011, 09:59 AM
I see, your 2000 is not listed...

then do this:
- compare your 2000 file with the 2002 Trans Am M6 12212156 file, and copy all tables that are different (it's a little tedious, take your time and get it right),
- full flash the edited 12212156 file and make sure your vehicle runs at least as good as previous;
- now you can upgrade to 02020003 or 03030005.
catman3126
July 14th, 2011, 10:00 AM
WHere do I get the 2002 file?
joecar
July 14th, 2011, 12:07 PM
See here: Stock 2002 Trans Am M6 12212156 (http://www.tunefiledepot.com/calibrations/stock/Pontiac/2002%20Pontiac%20Trans-Am%20Coupe%20Manual%20LS1%205.7%20Litre%20(1221215 6).tun)
catman3126
July 14th, 2011, 03:04 PM
Thanks anybody ever try to use the 02 corvette tune that has the same OS number? did they have 345 horse? what is the power output of the 02 T/A?
L31Sleeper
July 14th, 2011, 08:14 PM
Thanks anybody ever try to use the 02 corvette tune that has the same OS number? did they have 345 horse? what is the power output of the 02 T/A?

The Corvette is Drive By Wire (DBW) and the trans am is Drive By Cable (DBC) so you couldn't simply
flash in the file, you could however look at the fuel and spark tables.

-Justin
TFZ_Z06
July 15th, 2011, 02:18 PM
I use C0S5, derived from 02 Vette 12212156, in a 2002 Z06. The file in my sig is C0S5 (ready for full flash) w/12212156 OS and data from a 2002 stock Z06.
L31Sleeper
July 15th, 2011, 03:18 PM
There are several versions of 12212156 out there. A good example would be the guys doing the 12200411 PCM swaps into GMT400
trucks had a difficult time getting the push button 4-Lo working, some S-10 calibration segments were used to overcome this issue.

-Justin