Custom OS#5

[joecar]

Chad, thanks, that was it.

Thinking about it, it must be how a new install of a COS forces you to set values in the new tables.

Edit: or it could be what was in the flash from previous non-COS (12212156).

[Black02SS]

Glad you got it figured out.

[diynoob]

My PCM is currently running 12593358 -- I am trying to find COS5 for this setup. From the old COS3 tutorial it looks like I need 02040005 but I couldn't find that OS anywhere.

Am I correct in assuming that I should just flash over to 02020005 (hoping I got that number right) and then copy/paste my tables from the old 12593358 tune into it? If so, are there any particular tables I need to pay attention to (obviously timing tables, VE, etc.) or is it best to just copy/paste everything?

Also, is the official download link the one buried in the middle of this thread?

http://efidownload.iqd.co.nz/softwar...5_OS_Final.zip


Thanks in advance.

[joecar]

If you want 02020005, then that zip is only one part of it (that zip file corresponds to step 0 below).

Follow these links in the sequence shown:
0. showpost.php?p=32588&postcount=167
1. showpost.php?p=34134&postcount=168
2. showpost.php?p=45981&postcount=4

[diynoob]

Thanks,

I am not sure what the difference is between 02020005 and the other 0005 OS file. Any advice on which to use is appreciated. This is going on a 2003 Z06.

[joecar]

There is no 02040005...

You have to copy your old tables to 12212156 and full flash that to make sure it works.
If it does, then full-flash 02020005, and then cal-only-flash from 12212156.

The other 0005 OS is for Australian PCM's.

[diynoob]

Thank you joecar! I was thinking along those lines but didn't know the specifics of the upgrade path. Got all my tables copied over tonight (I think...) which was not difficult but sure was tedious. Going to reflash tomorrow and see how the car drives.

Is there anything I should be looking for in particular or is this just a pass/fail on whether or not the car drives at all with 12212156?

[joecar]

Car should drive the same with 12212156 as it did with your old OS.

[Beer99C5]

I just did the conversion from the 99 Vette to 2002 Vette OS, that was the easy part. When I flashed to the 12212156 I had to resest the oil life and do a Crank relearn, once that was done, seems to work good, put about 50 miles on it so far no codes.

I am have a bit of trouble getting the COS5 to work NA (not using the FI stuff, just N2O monitoring).

[diynoob]

Just down-converted from my 2003 OS to the 2002 OS 12212156. The car drives just fine. It's also one of the most beautiful days we've had here in Southwest Florida for a LONG time (cool and breezy 75 degrees outside, compared to the 90+ degree weather we've had lately) so it was nice to get the Z06 out and drive a bit.

I did have to reset oil life but did not have to do a CKP relearn. During flash EFILive told me all CASE data would be retained and that was correct.

Now once the car cools down the 2bar sensor is going in and I am flashing to COS5 tonight!