dimented24x7

iTrader: (2)

Im going to start using the '411 soon. Ive accumulated enough info to put together the XDFs for most of the engine (emmissions, spark, diag., etc.). While tunerpro cant datalog the OBD-II stuff yet, it is capable of editing the tables, as well as properly calculating the checksums. There are some things I dont like about it, but unlike the blackbox, it looks like the extra space on the flash chip can be used to write patches to fix those.

I know some people have been wanting to use these PCMs. They are a lot more capable than the earlier ECMs, and worthwhile converting over to. Ill be releasing the XDFs after Ive had a chance to work with them and test them out. At this moment, there is no flashing, but thats in the works, too.

Ive been wanting to use one of these for a while. I'll be using a RR, which will be a lot more convenient than using a PP-II and having to spend 10 minutes each time I want to change something.

The_Punisher454

So in the future will there ever be a way to flash one with my elmscan5?

Saar

actually, Mark wrote a plugin to use ELM based hardware to datalog using tunerpro... i have yet to see it in action, but it does all of the generic PIDs IIRC.

and with your knowledge, i'm sure you can get the more interesting stuff as well, knock retard and all that.

junkcltr

iTrader: (1)

Sounds interesting. First thing I look at when considering going to a new ECM/PCM is what it has for available RAM and ROM space for code, and what it has for unused I/O pins. Available I/O is the main driver for me. The '427 ECM I am using right now is kind of limited for I/O use compared to the '730 ECM which I thought was great. Does the '411 have a bunch of open slots in the connector?

dimented24x7

iTrader: (2)

Theres a limited ammount of space free. Something like 4k at the end of the OS, and another 8k at the end of the calibration. There is a lot of uneeded stuff that can be deleted if you want to make more room, and get some free address'. I have a complete pinout somewhere for it. Let me see if I can dig it up. That might give some more clues as to whats free or not. There are a lot of A/Ds. Even things like an input for A/C pressure. Some of that can probably be adapted for use on other things.

dimented24x7

iTrader: (2)

I dont think the elmscan is fast enough. The flash needs 4x VPW due to the large ammount of data that will be transferred during a reflash. The idea we're working on now is to use a low cost cable that can do the 4x mode for the reflash. Basically, once you have your bin together using tunerpro, you can then update the calibration section using the flash utility.

The_Punisher454

dang. I thought my elmscan5 was "low cost"? So it sounds like possibly a DIY cable solution then? If so, I'm all for that x10 ! If we get an inexpensive tuning path for the 411, some people are gonna get really pissed

Saar

http://pinoutsguide.com/CarElectroni...e_pinout.shtml

eh?

dimented24x7

iTrader: (2)

I mean the pinouts for the 80 pin connector on the PCM. There are unused options in the PCMs that normally wont show up on factory pinout diagrams.

dimented24x7

iTrader: (2)

We where thinking of something prefabbed. Again, it has to be fast enough for flashing (needs to do 4x mode). As for the tuning end, Im thinking of a series of XDFs like I did for the 98 blackbox. I will charge some small nominal ammount for them to help raise money for more development. There are a lot of things that Id like to get, like maybe stuff to put together good test bench for the PCMs, a nice function generator and oscope, and some other things that I havent had money for while in grad school. It should be fairly inexpensive, unless you want to use a roadrunner for real time tuning. The XDFs will also work with that as well, provided you disable the checksum so the PCM doesnt reset when you change things.

Currently I only have the info for the engine, but I will move onto the trans stuff next, and after that, maybe the e-throtte and some misc. stuff.

dimented24x7

iTrader: (2)

I was looking at that, and also a lot of the newer features added into tunerpro. When I get my '411 set up, Ill probably put together my elm and see what I can do with it. The OBD-II stuff is a little different in that you need to request, and wait for each parameter, so it will need some extensive macros to make it go, which I assume was the intent with the plug-in.

Saar

well, i posted that as an option for a cable, i can grab the factory wiring diagrams if necessary, if i know what it came from.

Saar

hmm.... thought just came to mind: is it likely that the upload/download software would be able to deal with other PCMs as well, specifically, the 98-02 or so FWD V6 ones? at the moment, we have an open-source tuning option for them(TinyTuner), but no way to up or download the BINs...

dimented24x7

iTrader: (2)

I think it may be able to. The only potential issues are differences in internal hardware. More specifically, the processor, flash, and memory map. Im not working on that end, but I do know there are some specifics involved in properly interfacing with the flash chip. For one, you need to unlock the PCM and so you can upload your app and restart it to provide the interface and reflash handling.

Do you know anything about the PCMs themselves? Its possible to make teh software generic in nature so you can specify where the upload is to take place. One thing thats important when reflashing is to not erase the OS and core boot logic. If those are corrupt, the PCM becomes a paperweight. You will have to remove and manually reflash the whole calibration in a programmer when that happens.

Saar

i know next to nothing about them other than they use a 68332(?) and all have 512KB BINs(i have about 20 of them ATM) on some variant of Intel flash. i've tried running the BINs through IDA, but didn't get very far, about the only thing i could identify is that the OSID is the last couple of bytes of the BINs.

dimented24x7

iTrader: (2)

If your going anywhere with them, you really need to know at least some basic info about how theyre laid out inside. The most important thing to know is where the datalink controller is. If you know that, you can then find the OBD-II scantool routines, which will give you the basics like the MAP, SA, RPMs, etc. that youll need to reverse the code and tables.

If theyre 68332's with the intel flash, then they should also be able to be reflashed. The only potential sticky issue is unlocking the PCM, but that can be done by force if you just transmit every number from 0 to 65535 as the key until you unlock it. Takes a few days, though. I know there are some routines floating around on the net for doing this.

Saar

someone on 60V6 actually made a "scantool" inspired program that went through all possible combos after trying known good keys. there is an upload and download function but i have no idea if it works or not, i have yet to pick up an OBD2 PCM.