Changing operating systems. From 12587604 to 12587603

[creativelemon]

As the title states after some research it seems in some cases it is recommended to outright switch to an operating system that is more supported. Im curious if that is something possible to do if anybody has any experience in this regard and has any advice? i have a 12587604 OS from a 2004 gto ls1 m6 dbc. Is it possible to switch to a 12587603 OS from say a 2004 c5 ls1 m1 dbc? Are the tunes identical? Is all i would have to do is flash the full bin from the new OS to my car? any feedback or help would be greatly appreciated. Thanks! my bin is attached.

[dave w]

Not All Blue / Green PCM's are DBC: https://www.lt1swap.com/cable_conversion.htm

dave w

[dave w]

2004 Corvette files attached

I don't remember where I got them from.

dave w

[creativelemon]

Thank you. Idk what blue or green means to be honest. Tgat Corvette should work i assume? Im not experienced in swapping operationg systems at all. Is it the same tune just different operating system?

[dave w]

1024K PCM's have connector colors Blue / Green

512K PCM's have connector colors Blue / Red

dave w

[creativelemon]

1024K PCM's have connector colors Blue / Green

512K PCM's have connector colors Blue / Red

dave w

Ah ok thanks for your help, im relatively new to ls tuning im from the Subaru tuning world which is much easier. So i know my car is drive by cable so that bin should be too? I should be able to flash the bin and it should be the same?

[creativelemon]

actually it appears from further research that corvette one you attached would work however i would have to manually compare every table and transfer any data from my bin to the corvette one? i hope thats not correct because its very time consuming but doable and makes sence. Im hoping someone here has experience swapping OS because there is over 1000 tables i would have to check copy i believe

[In-Tech]

I have not converted a blue/green to drive by cable. The corvette calibration is drive by wire. I am curious what others have done to make this happen since we don't have IAC tables or are they already there and I paid no attention? :( It seems to me 24lsx1(sp?) has quite a bit of experience so maybe he will chime in.

[Fast355]

I have not converted a blue/green to drive by cable. The corvette calibration is drive by wire. I am curious what others have done to make this happen since we don't have IAC tables or are they already there and I paid no attention? :( It seems to me 24lsx1(sp?) has quite a bit of experience so maybe he will chime in.

My 97 Express has a DBC 383 running a Blue/Green. Only certain part numbers and hardware numbers have IAC drivers. For other projects, I looked at probably 50-75 Blue/Greens in the junkyard recently and found 4 with IAC drivers. A couple in DBC 2003 Tahoes and a couple in DBC Express vans. I bought all 4 for $25 each. When I got the PCM in the van a few years ago I only found 2. LT1Swap wiring page has the information on which part numbers support IAC. You need a DBC base file to support DBC. The base file in my Express van is a 2005 Mexican 1-ton truck L31 GMT800 file.

[creativelemon]

Hmm, maybe this is a bit beyond my ability. I read on a github post that the 12587603 should have a m6 ls1 DBC combo correct?

[In-Tech]

My 97 Express has a DBC 383 running a Blue/Green. Only certain part numbers and hardware numbers have IAC drivers. For other projects, I looked at probably 50-75 Blue/Greens in the junkyard recently and found 4 with IAC drivers. A couple in DBC 2003 Tahoes and a couple in DBC Express vans. I bought all 4 for $25 each. When I got the PCM in the van a few years ago I only found 2. LT1Swap wiring page has the information on which part numbers support IAC. You need a DBC base file to support DBC. The base file in my Express van is a 2005 Mexican 1-ton truck L31 GMT800 file.

Yes, you are correct Fast, I did forget to mention the hardware differences. Thank You

[Fast355]

Hmm, maybe this is a bit beyond my ability. I read on a github post that the 12587603 should have a m6 ls1 DBC combo correct?

Only cars I could see that maybe had a P59 DBC would be a GTO or CTSV. Not sure what operating systems they used though.

[Fast355]

Just looked it up, LS6 in the CTSV used the early corvette or truck style DBW throttle body with dual connectors. 04 GTO LS1 was DBC. To my knowledge all Vettes were DBW from 97+.

[creativelemon]

Ok interesting, so than it shouldn't work. Which is interesting because in the 04 vette file i have, it shows dbw in red like my gto, and it also has filled in iacv tables. I was really hoping an os change was possible because there is no support for the Gto 12587604 OS

[In-Tech]

Have a gander at the two files I have for this. Lot's of info, I am not sure if you can't just uncheck the flag for DBW, again, I haven't tried so maybe this info will help.

[dave w]

Maybe the attached .bin will help? Likely a Stand-Alone Flash. . . no vats / emissions

dave w

[B52Bombardier1]

Hello,

My research indicates they made a few P59's with the IAC hardware (drive by cable) up to 2007. Not all P59's had this but the following hardware (not service) numbers 12575502, 12570558, 12583659, and 12589161 should have IAC drive by cable support. I seem to remember grabbing mine from an Express van.

Rick

[creativelemon]

Thank you everybody for all your help. I feel a bit overwhelmed now to be honest. Only reason i wanted to change os was to br able to tune my car since my os doesn't have an xdf I don't believe idk about buying a new ecu or anything. All this talk of dbc and dbw is confusing lol but i appreciate all your help. The corvette bin shows that is has IAC control tables that have values and it looks like DBW is disabled like in my gto. DBW aside, would i have to manually copy paste the diffrent values into the New os bin from my gto bin before i flash it?

[creativelemon]

Hello,

Not all P59's had this but the following hardware (not service) numbers 12575502, 12570558, 12583659, and 12589161 should have IAC drive by cable support. I seem to remember grabbing mine from an Express van.

Rick

Thanks for the info, the corvette bin that was provided is actually hardware number 12583659 so it should work with drive by cable and appears it does have iacv support

[B52Bombardier1]

A BIN is not hardware. Those four numbers above correspond to actual PCM hardware devices and you will find those hardware numbers on the PCM adhesive label sticker.

Rick

[creativelemon]

A BIN is not hardware. Those four numbers above correspond to actual PCM hardware devices and you will find those hardware numbers on the PCM adhesive label sticker.

Rick

Ok that makes sense, im not looking to change my pcm though. Just change the OS to a more tune-able os.

[dave w]

I'm hoping to add an OS option that will be helpful.

The 2002 Camaro LS1 engine is nearly identical to the 2004 GTO LS1 engine.

Perhaps using the 512K PCM (aka '0411) and Operating System 12212156 from a 2002 Camaro is an option? http://gearhead-efi.com/Fuel-Injection/showthread.php?10194-Looking-for-12212156-XDF-for-5-3-4l60e-swap&highlight=12212156

The 2004 GTO wire harness might require a few wiring changes for the 512K PCM, NOT a whole new harness.

dave w

[creativelemon]

Thank you for your help I really appreciate it. However im not sure how having to modify the wire harness is easier than flashing the 04 vette tune. Correct me if im wrong but For some reason it shows that it does in fact have iacv tables? If all i have to do is copy the tables over surely thats easier than modifying the wire harness. None of this would be needed if they made an xdf for my OS :(

[creativelemon]

Im not looking to change my PCM. If what im asking about (changing just the OS) is not possible than I'd rather live with my pcm and os

[dave w]

I use TunerCats OBD2 $oftware. Based on the .bin files posted in this thread 04 Vette vs. 04 GTO . . . The 04 Corvette is Drive By Wire.

dave w

17305

17306

[creativelemon]

Thank you for your help it was very informative. So I'll have to wait on doing an OS swap if its even possible. The easiest way would probably be save up for hptuners

[dave w]

The easiest way would probably be save up for hptuners:thumbsup:

TunerPro OBD2 has a limited library of Operating Systems. I'm not overly optimistic the library of TunerPro OBD2 Operating Systems will expand to include OS 12587604. Most, if not all TunerPro OBD2 Operating Systems were "Uncompensated" ventures or projects.

dave w

[Pulse_GTO]

Is the vehicle a 2004 GTO or are you just using a P59 out of 2004 GTO in a conversion project?

If it's a conversion project, the 2004 GTO computer already has the IAC drivers and you can change DBW to DBC in the software, so flashing to a Corvette OS should be fine.

If it's not a conversion project and you are actually driving a 2004 GTO, I would strongly advise against swapping to the Corvettes OS. I'm attaching an xdf for the 2004 GTO OS you can try out.

[creativelemon]

Is the vehicle a 2004 GTO or are you just using a P59 out of 2004 GTO in a conversion project?

If it's not a conversion project and you are actually driving a 2004 GTO, I would strongly advise against swapping to the Corvettes OS. I'm attaching an xdf for the 2004 GTO OS you can try out.

The vehicle is a 2004 Gto with the oem computer. Im not looking to change to DBW nor looking to change the computer.
I appreciate the xdf however i can tell it was generated via universal patcher While it is better than nothing, ive highlighted my issues with universal patcher in the thread for it.

It does allow access to most bins however it is far from complete which is fine since it is a free opensource work in progress. many tables are missing and you can only do so much with it. The program and the XDF it generates for tunerpro are missing hundreds of important tables.

it seems if i cant change my OS to something more supported for tunerpro than all i can do is pay the greedy HPTuners or wait until universal patcher has more support. i love what the program is trying to achieve but i dont think we are there yet even though the ecu is over a decade old, i hope soon we can all finally enjoy true open source tuning. thank you

[creativelemon]

Im curious if anyone knows about maybe disabling the DBW area in the vehicle options table? because even the vette has IACV tables. I also know some chevy express vans used OS12587604 and they were drive by cable.

[creativelemon]

So even if the OS is supported, in my case its not possible. There is no way i can change every single table from the 04OS to the 03 os just using tunerpro.

[In-Tech]

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