Downloading Vehicle's Raw Program

[Gregs]

Hi all! I'm looking to develop an opensource tuning program for gm trucks and i'm in need of a program to download the raw hex out of the pcm. I'm confident that i can decipher the hex, but not so confident that i can write a program to download the hex without frying the pcm. Anyone heard of anything that could help me out?

[Nytemare]

Hi all! I'm looking to develop an opensource tuning program for gm trucks and i'm in need of a program to download the raw hex out of the pcm. I'm confident that i can decipher the hex, but not so confident that i can write a program to download the hex without frying the pcm. Anyone heard of anything that could help me out?

I don't know about downloading it from a PCM...but how about downloading it from a programmer like an edge or a Diablo...that should be much easier.

 

They save a copy of the stock program so you can reload it if needed.

 

 

I googleized it and came up with this

 

http://www.getacoder.com/projects/gm_pcm_f...ine_113613.html

 

Apparently this guy wrote a machine code program to install a program on the PCM's ram that you execute to initiate a download....maybe you can confer with him....or this is you...that would be funny

[Gregs]

i checked out the link, thanks. the diablo suggestion while good won't work because of the way they have it set up, it saved the original in an encrypted format and the modifiable part that they use for custom tunes is only a few kb, the predator uses both files and puts them together then flashes them to the pcm

 

edge only offers a programmer for nnbs trucks and even then it doesn't actually flash the pcm its a pass through device.

[Nytemare]

Shitty....

Here's the link to the chips data sheet:

http://www.datasheet.org.uk/MC68377-datasheet.html

 

I am assuming you have a little more than a basic understanding of chips and interfaces here...so you should be able to get most of what your looking for from here.

[alwcurlz]

HPTuners is one that can download and save the original PCM format into a file. They have a very extensive customizing software that analyzes all live functions and allows you to adjust nearly every aspect of the engine and transmission functions that the factory can. You'll spend about $500 for the software and scanner but, will be able to adjust and tweak the PCM an unlimited amount of times at no extra charge on that vehicle. Trying to achieve this on your own will be quite risky & costly if you mess something up though. Even HPTuners has their warnings and cautions. HPTuners is looking for someone for a computer programmer guy like yourself though...check this link!

[Nytemare]

HPTuners is one that can download and save the original PCM format into a file. They have a very extensive customizing software that analyzes all live functions and allows you to adjust nearly every aspect of the engine and transmission functions that the factory can. You'll spend about $500 for the software and scanner but, will be able to adjust and tweak the PCM an unlimited amount of times at no extra charge on that vehicle. Trying to achieve this on your own will be quite risky & costly if you mess something up though. Even HPTuners has their warnings and cautions. HPTuners is looking for someone for a computer programmer guy like yourself though...check this link!

That's not the type of download he's looking for...he is actually looking to download the PCM's Operating program...a little more involved than just the engine operating parameters of the PCM.

 

From what I understand, he wants to actually access the program that executes the engine operating system. This will allow a download of the PCM's flash data, than you can use an open source code program to do the same thing you can do with EFI Live or HPtuners etc. than reload the tweaked parameters on the ECM. The big difference here is that this program would be free, not costing you 500 bucks...and you could tune an unlimited amount of vehicles with this program without having to buy licensees or credits.

[alwcurlz]

HPTuners is one that can download and save the original PCM format into a file. They have a very extensive customizing software that analyzes all live functions and allows you to adjust nearly every aspect of the engine and transmission functions that the factory can. You'll spend about $500 for the software and scanner but, will be able to adjust and tweak the PCM an unlimited amount of times at no extra charge on that vehicle. Trying to achieve this on your own will be quite risky & costly if you mess something up though. Even HPTuners has their warnings and cautions. HPTuners is looking for someone for a computer programmer guy like yourself though...check this link!

That's not the type of download he's looking for...he is actually looking to download the PCM's Operating program...a little more involved than just the engine operating parameters of the PCM.

 

 

From what I understand, he wants to actually access the program that executes the engine operating system. This will allow a download of the PCM's flash data, than you can use an open source code program to do the same thing you can do with EFI Live or HPtuners etc. than reload the tweaked parameters on the ECM. The big difference here is that this program would be free, not costing you 500 bucks...and you could tune an unlimited amount of vehicles with this program without having to buy licensees or credits.

 

 

Hmm...I see. That is pretty involved and would be an interesting feat to accomplish. That would be pretty slick once developed!

[minibike132]

HPTuners is one that can download and save the original PCM format into a file. They have a very extensive customizing software that analyzes all live functions and allows you to adjust nearly every aspect of the engine and transmission functions that the factory can. You'll spend about $500 for the software and scanner but, will be able to adjust and tweak the PCM an unlimited amount of times at no extra charge on that vehicle. Trying to achieve this on your own will be quite risky & costly if you mess something up though. Even HPTuners has their warnings and cautions. HPTuners is looking for someone for a computer programmer guy like yourself though...check this link!

That's not the type of download he's looking for...he is actually looking to download the PCM's Operating program...a little more involved than just the engine operating parameters of the PCM.

 

 

From what I understand, he wants to actually access the program that executes the engine operating system. This will allow a download of the PCM's flash data, than you can use an open source code program to do the same thing you can do with EFI Live or HPtuners etc. than reload the tweaked parameters on the ECM. The big difference here is that this program would be free, not costing you 500 bucks...and you could tune an unlimited amount of vehicles with this program without having to buy licensees or credits.

 

 

Hmm...I see. That is pretty involved and would be an interesting feat to accomplish. That would be pretty slick once developed!

 

 

Isn't that pretty much what blackbear does?

[Nytemare]

No...well yes...but they use EFI Live and tune from there...Greg is trying to build a program from scratch that will work like Hptuners or EFI live...but you don't have to pay for it.

 

Open source code means Freewear.

[Gregs]

Well this past week i took a little break, but i'll be right back on the bull tomorrow. Nytemare has the right idea i'm at the beginning of the long road ahead.

[Nytemare]

Well this past week i took a little break, but i'll be right back on the bull tomorrow. Nytemare has the right idea i'm at the beginning of the long road ahead.

I'm not great with it...but I understand code, C, C+...machine and Hex...if you get stuck just e-mail me or PM me what you have and I'll see if I can sift through it.