Updating to 2002 tune from 2000

[Bill00Form]

I have a 2000 firebird formula and have come across a couple threads that talk about flashing 2000 LS1s with a 2002 tune. From what I've seen it seems to be a good thing.

Is this something that everyone should do? I have a LS7 based 427 in my car.

Thanks

[joecar]

You would do it if you wanted to run COS5 (which is based on the 2002 OS 12212156) or if you wanted to do a 4L80E segment swap (it is easier to find 12212156 files containing 4L80E segments).

It is a later OS so maybe the GM engineers improved some things in it...

If your current tune is not stock, then you would have to copy all your tables over to the new tune (table-by-table, takes a few hours of careful copying).

[BLK02WS6]

Like Joe said, there are some improvements in the 01 & 02 OS's. For one, no more backup VE tables! The best thing is that if you go to the 12212156 OS, it makes it easier if you want to upgrade to a custom operating system (i.e. if you want to run speed density, 2/3Bar, or nitrous). If your 427 hasn't been tuned yet, then it would definitly be worthwhile to start with a 12212156 OS to tune it...

[Bill00Form]

Thanks. I wasn't sure what happens to VIN. I saw a couple of posts talk about it but didn't really say what happens. Is it just assigned another for the purposes of the computer and nothing else is really effected?

[joecar]

VIN is not a problem, you can write the correct VIN into the new tune (can be done using the scantool).

The VIN is assigned so that the other modules on the serial bus can cross check security.

Also, the tunetool lets you perform VATS relink if necessary (the BCM learns the PCM's VIN).

Also, the VIN is read from the PCM during emissons/smog testing.

[Bill00Form]

Thanks, appreciate all the help.

[Bill00Form]

Ok, I must have missed something. I tried to flash the computer and it said the file's operating system number, 12212156 is not compatible with the PCM's operating system number, 09381344. A reflash is only available when both systems are compatible. I also just updated the software. Thanks

[minytrker]

You have to do a full flash.

[Bill00Form]

Is that the "flash pcm operating system and calibrations" option? It's grayed out. Is there something I need to do to make that option available. Thanks

[joecar]

Yes that one.

Did you enter the registration details from your blue card (exactly as on the blue card)...?

[Bill00Form]

I think so. I just verified the serial number and it seemed ok. I registered online when I originally purchased it back in 2007. It shows one license used and one available since this is the only car I've used it on. It's the commercial version. What i did was to open a 2002 file from the online depot and saved it in the bin file. I made the changes and tried to flash my pcm. I didn't realize I had to select the other option. I then tried to do the full flash but it was grayed out. Sorry for all the questions/issues. thanks again.

[joecar]

In the tunetool do Help->About and post a screenshot of that here.

[joecar]

Try this: close the tunetool, repoen the tunetool, open the 2002 flle... does the full flash (cal and OS) show up in color (not greyed out)...?

[joecar]

No worries.

[ScarabEpic22]

Make sure you have your V1/V2 plugged in BEFORE you open the tune file otherwise the full flash icon will be grayed out.

Also are you running the latest V7.5.7 build 206? If you have a V2, you also need V8.2.1 build 197 and V2 bootblock 2.07.04 firmware 2.07.29.

[Bill00Form]

It worked. I restarted the computer and made sure the cable from the flashscan V2 was connected. It wasn't grayed out so I was able to easily flash the computer.

Thanks for all the help.

One question though. My calculated VE, not corrected data shows N/A for values. Is there something I need to fix?

[zapp168]

Is the 02 operating system superior enough to warrant upgrading if you are not planning to go with a custom OS? I have a 99 that I have just begun tuning, is it worth it to upgrade it first?

[joecar]

Having only one VE table makes it easier to tune...

but you will have to copy some of your old tables to the new file.