Hack the system! Hack the world!

[psychlow]

Please forgive the gh3y title, I couldn't resist, sorry.

Lately I've been seeing a bunch of folks who are making huge leaps and bounds toward DASMing (de-assembling) the DSM ECU's codes from the EPROMs. The focus is currently centered on the 1G's, since DSMlink seems to have abandoned us.

If we have any electronics wiz's in here who don't yet know about these, check them out! We need more folks who know what they're doing to help crack the code.

Imagine a world for us 1Gers could:
- Adjust fuel/timing curves & compensate for larger injectors (without a SAFC)
- Set your own idle
- Set your own rev limit
- Enable/disable stutterbox at your desired RPM limit
- Program in your own security startup sequence
- Program in your own A/C cut/RPM
- REMOVE FUEL CUT.
And reprogram pretty much anything else you can imagine that is controlled by the ECU. IN REAL TIME, in the car, while the car is running - without a standalone, using your laptop or palm.

http://www.ecimulti.org (DSM ECU Forums)
http://autos.groups.yahoo.com/group/dsm-ecu/ (DSM ECU Mailing List)
http://users.wpi.edu/~ktarry/dsmromedit.html (General hex-editing on the EPROM. Posted on both of the above-mentioned.)

 

[dsmturboawd]

wasnt this discussed and deleted a few months back? *shrugs*

eitherway, there are some interesting ideas here.

 

[kpt4321]

This is a HUGE development. I'm going to be running a modded chip in my car, it's worlds better than a SAFC.

 

[psychlow]

Originally posted by dsmturboawd
wasnt this discussed and deleted a few months back? *shrugs*

Not sure, I guess I wouldn't have found it by searching if it was, though!

Originally posted by kpt4321
This is a HUGE development. I'm going to be running a modded chip in my car, it's worlds better than a SAFC.

When you can independently adjust timing and fuel at 12 or 14 different RPM points, it sure is. Also for those of us running stock injectors, eliminating fuel cut would be awesome.

 

[kpt4321]

Originally posted by psychlow
When you can independently adjust timing and fuel at 12 or 14 different RPM points, it sure is. Also for those of us running stock injectors, eliminating fuel cut would be awesome.

Timing map is 16 different points, fuel map is 14.

 

[98TsiAWD]

Why not just wire a 95 eprom ECU into your 1g and run dsmlink? sounds alot easier to me.

 

[Lucky13]

I comes down to money. Getting chip's burned is cheaper then DSMlink.

 

[kpt4321]

Originally posted by 98TsiAWD
Why not just wire a 95 eprom ECU into your 1g and run dsmlink? sounds alot easier to me.

Why is wiring in a big harness, and then buying a 95 EPROM ECU, and then buying a 600 dollar DSMLink program an alternative to using free software to edit your fuel and timing maps, and then using a 60 dollar chip burner?

 

[Drifte]

Sweet

 

[psychlow]

Originally posted by kpt4321
Timing map is 16 different points, fuel map is 14.

Well, fine, GET technical!

 

[BoostinAWD]

http://www.dsmchips.com/


Here you go
He can do just about anything you want.

I'm about to pick one of these up.

 

[kpt4321]

That's not the same thing as we are talking about.

I have utmost respect for Jeff and what he is doing, he's doing a geat job.

We're talking about burning your OWN maps for free, which gives you basically the same control over timing and fuel as you would have with a standalone.

 

[studio]

Originally posted by kpt4321
That's not the same thing as we are talking about.

I have utmost respect for Jeff and what he is doing, he's doing a geat job.

We're talking about burning your OWN maps for free, which gives you basically the same control over timing and fuel as you would have with a standalone.

ya, http://users.wpi.edu/~ktarry/dsmromedit.html has the code also.

this is what i *might* do.

and who makes a 28pin chip burner for 60? cheapest i found was for 150 and were about to but it.

only thing i dont link about the burning a chip is its time consuming and not wouldnt exactly "on the run" tuning like dsmlink is.

 

[kpt4321]

Originally posted by studio ya, http://users.wpi.edu/~ktarry/dsmromedit.html has the code also.

Really? Weird, I wonder whose site that is.

That stie has the things necessar for you to know to edit the code, but you still have to know what you are doing.

and who makes a 28pin chip burner for 60? cheapest i found was for 150 and were about to but it.

http://www.batronix.com/electronic/circuits/eeprommer.shtml

 

[BoostinAWD]

I have one of those burners somewhere collecting dust in the garage.
I used to re-program the chips in my paintguns back when.

I'm almost certain it was 28pin also, where can the individual chips be purchased?

This is badass. Being able to start with a descent tune right out of the box with 780cc injects.

 

[wishihadatalon]

so would you have to take the chip out and burn it everytime you want to change something.

 

[BoostinAWD]

yes, but it would be socketed, and how often are you gonna change things like your launch rpm, injector size, or rev limiter?

Not very often I don't think, unless you are sick in the head like me

 

[4twenty]

You can flash eeproms using your motherboard. I am pretty sure you have to use flash eproms though if done this way. Just pull out your bios chip and put in blank chip. Then use a bios flashing program to flash file to chip. Then you put your bios chip back and your all set. I used to do this to program one for my xbox.
Jared

 

[Enigma_Man]

4twenty, the motherboard BIOS chips are a different size/pin layout than the DSM ROM chips.

-Jesse, currently at work, where he writes BIOSs for a living.

 

[4twenty]

You are right I missed that. I once bought a programmer from a company called batronix. It was like $50 if I can remember right. I know a guy who has an ECU for sale that has DSMlink in it but he said it was bootlegged. He also doesn't have the cable anymore and DSMlink won't send me a new one since it is an unregistered copy. Is there anywhere else I can get a calbe to work with their software? If not I can build it I have a bachelors in CPE but is it just matter of converting the ttl to cmos logic levels or is there other stuff involved?
Thanks
Jared

 

[4twenty]

p.s. oops missed the earler post with a link to batronix site

 

[logic]

Originally posted by Enigma_Man
4twenty, the motherboard BIOS chips are a different size/pin layout than the DSM ROM chips.

*nod* I believe I read somewhere (the dsm-ecu Yahoo group, maybe?) that one of the more popular 3Com ethernet cards with a flashable BIOS had the correct socket size for the job.

 

[psychlow]

Some of guys are also missing an important point - a ROM emulator would allow us to do like DSMLink and make changes on the fly.....

ROM emulators aren't cheap, but if someone made a purpose-built ROM EMU for DSMs, it could be made more cost effective...

 

[kpt4321]

The standard romulator is only 150 dollars, which really isn't much more than a burner.

What I would really like to see done is some sort of secondary board that you could plug into the socket, which would allow changes on the fly. I don't think this would be that difficult, but I'm not an EE guy so I'm afraid it's just wishful thinking for me.


On another note: I'm running a custom burn in my car right now, and it's working FANTASTIC. I re-worked the timing maps for a little more advance at cruise, and a much flatter profile at WOT. The car no longer lays over after 6000 rpm, which is VERY nice.

I'm also running full injector compensation, which has been working out alright so far, although I need to tweak it a little bit still.

The only issue I have is a knocking problem at part throttle. I was richening up this range with the MAFT when I as running it, so I think that it's simply too lean now with the MAFT taken out of the loop. I'm going to run some datalogs, and then add some fuel and maybe subtract a degree of timing or so in that area.

840 rpm idle is sweet, nice and smooth.

 

[wishihadatalon]

so there is a way to make this a real time plug and play option. not put the chip in data log go to the lap top and change where it needs to be take the chip out and burn it again. b/c that would be sweet.