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NG900 & OG9-3 Performance, Mods & Tuning Covers Tuning & Performance modifications for the NG900 (1994 to 1998) & OG9-3 (1999-2002) & '03 Convertible

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  #41  
Old 5th February 2006
A12 A12 is offline
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Any updates zer0fade?What can I do to help?
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  #42  
Old 5th February 2006
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Oops sorry I meant zer0daze.
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  #43  
Old 6th February 2006
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sorry i didnt post back over the weekend. spent all day saturday tuning cars, and all day sunday fixing the splines that were f'd up on my axle... it made swapping in my pro kit an all day project. oh well.

so i didnt really have a chance to look at anything this weekend. figuring out the checksum is probably the most important thing.

i still think that the ecu may be loading both of these chips in to the ram thats on the board. i am wondering if it does, what it loads, and if it would be possible to just replace that with a rom.

nefarious, do you have an eprom programmer? if so you should power that spare ecu up, solder up some wires to the ram and take a dump of it.
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  #44  
Old 8th February 2006
zer0daze zer0daze is offline
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maps i noticed in some free time i had drinking a cup of joe.

location and size
02D0 8x15
0416 6x16
057e 8x16
0717 4x16 (there is another map the same size just under it)

the sizes may be a little off... i counted quickly and was still on my first cup of coffee. open up analyze and take a look at those locations.

there are a few other maps i noticed as well that were 4 x whatever.

i am still working on getting better disassemblies.
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  #45  
Old 8th February 2006
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Which dissassmebler are you using?
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  #46  
Old 10th February 2006
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Quote:
Originally Posted by A12
Which dissassmebler are you using?
ida

The message now has atleast 10 characters.
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  #47  
Old 13th February 2006
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Hi Zero. How are you getting in? Is it via the 8 pin array at the top of the board via the processor or are you connecting to the flash direct?
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  #48  
Old 14th February 2006
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the dumps i took were from the chips. they are no longer on the board

i have been kinda busy with work and other projects so i havent played around with this at all over the last week or so.
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  #49  
Old 30th April 2006
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i am going to bump this. now that i have pissed a couple people off, maybe when they are laying out in the sun throwing the ball for the dog, they will be reading a book about assembly, or maybe C+ so they can write a front end.

if only there were more asian guys interested in saabs. they would have just changed a tire and the ecu would have been disassembled... crazy asians
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  #50  
Old 30th April 2006
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very interesting...
i definately have to keep an eye on this even though this doesnt apply to my car, but one day i might benefit from this.
keep up the good work and 2 thumbs up to you.
your folowing in the footsteps of the hondata guys but your doing it on saabs
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  #51  
Old 30th April 2006
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good stuff zerodaze


im going to need you to tune my honda when i finally get it back on the road, too
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  #52  
Old 30th April 2006
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Quote:
Originally Posted by zer0daze
i am going to bump this. now that i have pissed a couple people off, maybe when they are laying out in the sun throwing the ball for the dog, they will be reading a book about assembly, or maybe C+ so they can write a front end.

if only there were more asian guys interested in saabs. they would have just changed a tire and the ecu would have been disassembled... crazy asians
Ummm...my take-away from this post is that Asians are more ECU savvy than non-Asians, and people who don't know assembly language, or who don't care to learn, are lazy....

Is that an accurate assessment?

Last edited by mike saunders; 30th April 2006 at 07:57 PM.
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  #53  
Old 30th April 2006
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Quote:
Originally Posted by mike saunders
Ummm...my take-away from this post is that Asians are more ECU savvy than non-Asians, and people who don't know assembly language, or who don't care to learn, are lazy....

Is that an accurate assessment?
Somewhat mike...
then again how many ECU's come with serial connection right on board???
not too many i can think off, thats why ppl who are really serious about performance switch to standalone because of the tunning costs.
if everytime you made a major change to your setup you need to re-program your ECM, and if its like saabs where there's limited aftermarket the market that specializes in it takes advantage and will rob you blind !!

IF zer0daze does manage to sort this out (and im sure he will) how many on here are willing to try and tune their own cars ?
im sure a small percentage will say no due to the fact that they will be afraid to mess with settings but the majority will try to twek or mess with them to try and get all they can out of the factory ECM just like Nordi, maptun and the other tuners do for free !!!

and im sure that no one can beat free!
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  #54  
Old 30th April 2006
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Problem is he's about two years too late for me and some other folks. There's nothing more to be done....

Maybe some of the new guys might want to chance it...
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  #55  
Old 30th April 2006
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Quote:
Originally Posted by mike saunders
Problem is he's about two years too late for me and some other folks. There's nothing more to be done....

Maybe some of the new guys might want to chance it...
I might....

I might get someone who does a lot of standalone management tuning to have a looky.....

I might win the lottery and have the whole car Air freighted over to Nordic and give them carte blanche....

but I digress
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  #56  
Old 1st May 2006
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Saying asians will probably understand how this ECU works is rediculous and a bit naive. I would say that Europeans probably understand it best since they have been using this ECU for a while. The US made Moto 68332 is very old and runs at 16 Mhz (read sssllloooowww). Most x86 computers today are running at 3 Ghz!. One possible reason it has two flash parts is one contains i-stream (instructions) and the other is d-stream (the maps used for proper settings based on inputs (sensors in the car)).

All ECU boards have serial ports on them. Usually the serial port consists of 2 stake pins for transmit and receive as a console to the processor. In order to reverse engineer this to make your car go faster, you will have to not only modify the actual maps (ie a matrix table that reads input stimulus and locates the proper outputs [boost, fuel, air, etc], but you will have to understand the algortihms used with the matrix table data. You will also have to fully understand the 68332 output ports and what the ranges are. I paid good money to have my ECU (stage 3+) done by Nordic where they have been doing it for years and are still making enhancements. Sorry to be a wet blanket, but ppl who take the time to figure all this out (can take years), usually make a career out of it for a reason...

-greenhobby
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  #57  
Old 1st May 2006
zer0daze zer0daze is offline
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Quote:
Originally Posted by greenhobby
Saying asians will probably understand how this ECU works is rediculous and a bit naive. I would say that Europeans probably understand it best since they have been using this ECU for a while. The US made Moto 68332 is very old and runs at 16 Mhz (read sssllloooowww). Most x86 computers today are running at 3 Ghz!. One possible reason it has two flash parts is one contains i-stream (instructions) and the other is d-stream (the maps used for proper settings based on inputs (sensors in the car)).

All ECU boards have serial ports on them. Usually the serial port consists of 2 stake pins for transmit and receive as a console to the processor. In order to reverse engineer this to make your car go faster, you will have to not only modify the actual maps (ie a matrix table that reads input stimulus and locates the proper outputs [boost, fuel, air, etc], but you will have to understand the algortihms used with the matrix table data. You will also have to fully understand the 68332 output ports and what the ranges are. I paid good money to have my ECU (stage 3+) done by Nordic where they have been doing it for years and are still making enhancements. Sorry to be a wet blanket, but ppl who take the time to figure all this out (can take years), usually make a career out of it for a reason...

-greenhobby
the asians thing was a joke.
as for the negtivity towards doing it, dont post it here. pgmfi.org an openecu.org prove most of your post wrong.
hobbiest do it. i worked on the honda stuff for 3 years, then i made a career out of it, i no longer liked it. i sold my car and the majorty of my business and bought a saab, thinking i wouldnt mod it. 2 weeks later i had a 2nd ecu with the chips off the board and the code disassembled. why? for some strange reason i enjoy it more when im not getting paid to do it.

oh, and mike... the only people that i would call lazy are the ones that will complain about the costs and then not do anything about it. that crap drives me nuts... i see it all day long from the sales staff at work.
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  #58  
Old 1st May 2006
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Quote:
Originally Posted by zer0daze
oh, and mike... the only people that i would call lazy are the ones that will complain about the costs and then not do anything about it. that crap drives me nuts... i see it all day long from the sales staff at work.
That's a valid point.
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  #59  
Old 1st May 2006
A12 A12 is offline
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zer0daze:

How's it comin with the ecu work anyways?Do any more investigation?
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  #60  
Old 1st May 2006
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"pgmfi.org an openecu.org prove most of your post wrong."

Which part of my post was wrong? The 16 MHz part? The slow speed part? The serial port part? The flash part? The mods require understanding of the maps and algortihms part? The 68332 has programmable ranged output ports? The part where people get paid for their knowledgable mods to the ECU? Exactly which part was wrong? You've been a software engineer for how long? You need a website to prove me wrong? I didn't say don't do it. I said to get it right, you'd better know what your doing. If your cranking your engine up to 6K with full boost on the highway, you better have those maps complete. My note is intended to be a caution to those that think this is easy and jump in but are unaware of the dangers (NOT to crap on your posts and just be negative). That said, by all means tinker away...

-greenhobby
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