Hack the system! Hack the world!

[DSM90AWD]

Originally posted by 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...

What would be sweet was package the "romulator" with a couple add'l inputs (W/B O2, EGT, Boost) and give the ability to datalog the whole thing

Now that the DSM-ECU group is making great headway in de-assembly, Mike Licht /Jeff O are developing for the 1Gs.. and Todd's no longer MIA... I see some pretty cool stuff on the horizon for us "forgotten" 1Gers

 

[pneumo]

Here's a cool idea that I have no idea how to implement, or even if it can be done. Have the Accel Enrich function linked to ignition timing so that when there is a quick and/ or large increase in throttle the timing drops a few extra degrees for a short time. Doing this would give the ECU a head start on the large airflow that is just about to come through the MAF. That might help with some of the knock issues going on at mid airflow levels.

If there already is a connection to timing and TPS change then it's just a matter of tuning that # so it pulls more timing.

HTH

 

[kpt4321]

Not a bad idea man, not a bad idea at all!

 

[psychlow]

From what I've been able to tell, timing isn't directly influenced by TPS voltage currently, at least on my 1990 ECU. The injector pulse immediately responds to TPS changes, but the timing takes about an 1/8 - 1/6 of a second to catch up.

Can anyone else confirm this from their logs on later DSMs?

 

[kpt4321]

As far as I know, timing is not related to TPS. That's why he suggested it.

 

[wishihadatalon]

i have a question. do you need a 95 ecu to run the dsmlink. or can you just get the prom soltered to the board of any ecu and run it? oh and has anyone heard if they are making a 1g dsmlink. i have.

 

[kpt4321]

1. Yes, you need a 95 EPROM.

2. No, they are not making a 1g DSMLink. Not yet at least.

 

[Cesar]

I was wondering...

I'm might be purchasing a 93 tsi, it so happens that the previous owned decided to take the car apart and never put it back together...
he had the ecm in his hands, and after taking a class in automotive electronics I'm aware that electrostatic discharge could have wrecked that unit...is there a way to test it without installing it?
Is there a difference between the 1g gen ecms? Or just as long as they are awd turbo they are the same?
I've been considering purchasing a stand alone, but after reading this post, and going through the links, I would like to find out more about this programing stuff...it's a lot cheaper (and i'm sure a lot harder)
Where could I start?

 

[kpt4321]

You'll have to put it in a car, as far as I know. That's the easiest way to test all of the different things that could be dead.

The 90 ECU code is different from the 91-94 ECU code (91+ is better). However, you can just switch the chips (if it's eprom, see next).

Not all ECU's were EPROM, some of them had the memory and processor integrated into one chip. Those are bad, you want the ones with a seperate EPROM.

 

[logic]

Originally posted by kpt4321
No, they are not making a 1g DSMLink. Not yet at least.

But you do have an option, if you're feeling up to the task:

http://206.124.12.138/dsmlink1g/

Viola, DSMlink in a 1g. Just don't make any mistakes.

 

[DSM90AWD]

Originally posted by Cesar
Is there a difference between the 1g gen ecms? Or just as long as they are awd turbo they are the same?

The major diff btw a 90 ECU and 91-94 is that the 90s have less Fuel Trim adjustment range. A 91-94 can be used in a 90 by swapping the tach and ground wires on the ECU Harness (pins 6 and 14).

DSM-Link is a nice option.. but after you add up the costs (1995 eprom ECU + DSMLink + Harness + 2G Knock/O2 sensors), risks, labor involved..etc.. you may be better off getting an aftermarket eprom (if your ECU has one) and datalogger.

If your 90 has an eprom (slim chance)... then you could just have the 91-94 code put onto an aftermarket chip and reuse that ECU

 

[kpt4321]

Originally posted by DSM90AWD
The major diff btw a 90 ECU and 91-94 is that the 90s have less Fuel Trim adjustment range.

The 90's also have sissier fuel and timing maps. 91+ code is a good upgrade.

 

[DSM90AWD]

Originally posted by kpt4321
The 90's also have sissier fuel and timing maps. 91+ code is a good upgrade.

..you are the "romulator"

 

[Drifte]

Originally posted by kpt4321
You'll have to put it in a car, as far as I know. That's the easiest way to test all of the different things that could be dead.

The 90 ECU code is different from the 91-94 ECU code (91+ is better). However, you can just switch the chips (if it's eprom, see next).

Not all ECU's were EPROM, some of them had the memory and processor integrated into one chip. Those are bad, you want the ones with a seperate EPROM.

Unless he took it out of the case it is very unlikly that ESD could have damaged it. Other damage is possable though.

 

[kpt4321]

Originally posted by DSM90AWD
..you are the "romulator"

Nope. http://autos.groups.yahoo.com/group/dsm-ecu/ is the romulator!

 

[Maestr0]

If I swap to a 91+ ECU, will my crusie control still work properly? I'm seriously considering this as an alternative to getting E-manage. I want control over timing too.

 

[DSM90AWD]

Originally posted by Maestr0
If I swap to a 91+ ECU, will my crusie control still work properly? I'm seriously considering this as an alternative to getting E-manage. I want control over timing too.

I assume you have a '90 as no car is listed on your profile?
In short.. Cruise Control is unaffected by an ECU Swap.

 

[kpt4321]

Cruise control is not effected by the ECU.

E-Manage can control timing, just FYI.

 

[Maestr0]

yeah, I know the E-manage can control timing, that's why I was considering it over an safc. However, this looks like it could be a cheaper alternative, as well as different. I'll have to look into getting an eprom ecu!
Thanks

 

[kpt4321]

There are more things that have been figured out since those websites were put up. I'm going to work on an updated version with a table of contents as soon as I get a chance.

I'll post it here when I am done.

 

[kpt4321]

New rom editing guide is up.

http://users.wpi.edu/~ktarry/dsmtech/dsmromedit.html

It's much improved over the old version.

 

[DSM90AWD]

good job

 

[Bohrn]

Kyle, are you guys going to sell these chips at one point? Or are you just going to put up the code and people need to burn thier own chips?

BTW, awesome work, this is great.

 

[wishihadatalon]

"- Are you doing a 1G version?

A version of DSMLink specifically for the 1st generation DSMs is in the pipeline. We just haven't had time to do anything with it lately. We'll be sure to post something about it on the homepage as soon as we have one running, we promise. We hope you understand that this is a common question submitted to us by e-mail...the more e-mail we gotta answer, the less time we have for anything else. As SOON as we have an estimate on availability, you can bet this site will be updated accordingly"
that was taken from the dsmlink website. i hope they get this done soon.

 

[kpt4321]

Originally posted by Bohrn
Kyle, are you guys going to sell these chips at one point? Or are you just going to put up the code and people need to burn thier own chips?

They are not for sale, I am just providing information to the public. For right now, to offer anything would be unfair to those who are doing the work and selling those chips.