EEPROM & ECU Hacking
Posted: Sat May 11, 2002 12:43 pm
Hey Guys,
I've been emailing a guy in New Zealand, who has an aftermarket eeprom out of Japan. He's in the process of trying to figure out how to hack the assembly code on it.....or if it's C or whatever. It sounds like he's a programmer and knows what he's doing.
He is looking for anyone that has US spec turbos, or even ej20t swaps to try the chip out. It sounds like if he can get enough info he can reprogram the eeprom for other vehicles.....like the N/A engines.
The only hitches that I can see is that the roms can only be used on an 8-bit ECU. From what we've found out, the 89-91 models had the 8-bit ECU, and the 92-94 models were 16-bit. Also he said you need to run at least 96 octane.....now I don't know if that is RON or a different octane rating system then what we have in the US.
Here is the original thread he started on the USMB
http://pub1.ezboard.com/fultimatesubaru ... 4524.topic
Here's what he's replied to me.
>>>>>>>>
Hey there Josh, I'm pretty sure from what I know and others have told me, that the chip is no good to you with your car being naturally aspirated, but can you tell me if you have such thing as a 1989-91 turbo legacy in the USA, and if so what motor was it fitted with ej20t or ej22t , if you do have ej20t motors in early subbies, let me know , and see if you can hook me up with someone who has one, so we can try this chip in your US spec vehicles, you can only use it with 8 bit cpu's and you must run at least 96 octane fuel, or boy oh boy you'll regret it!! lol, but I'm not kidding you its about a 25-35kW increase in power which aint to be sneezed at.. I'm expecting to receive some code soon for what we call a group n minus chip, its a bit tamer than the group n, it only runs about 14psi boost(1bar) so that could be of interest to someone as well, let me know what you can find out, (ps I have someone working on cracking the source code, we are pretty sure all you guys are wrong about it being obd1(whatever that is, I assume its some sort of Motorola coding, this must only be for the factory code), we think its a variant of C or C++, when I find out I will let you know, and if it turns out to be C, then I can easily rewrite new source code for your NA subbie.
>>>>>>>>>
So if any of you are interested in helping him out, shoot him an email thecates@paradise.net.nz
I know I'd love to have this valuable info......and possibly the power
Josh
************************************
Josh Colombo
<mailto:Josh@surrealmirage.com> Josh@surrealmirage.com
"Life, an ever-changing melody
of beats and rhythm" - ME
************************************
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I've been emailing a guy in New Zealand, who has an aftermarket eeprom out of Japan. He's in the process of trying to figure out how to hack the assembly code on it.....or if it's C or whatever. It sounds like he's a programmer and knows what he's doing.
He is looking for anyone that has US spec turbos, or even ej20t swaps to try the chip out. It sounds like if he can get enough info he can reprogram the eeprom for other vehicles.....like the N/A engines.
The only hitches that I can see is that the roms can only be used on an 8-bit ECU. From what we've found out, the 89-91 models had the 8-bit ECU, and the 92-94 models were 16-bit. Also he said you need to run at least 96 octane.....now I don't know if that is RON or a different octane rating system then what we have in the US.
Here is the original thread he started on the USMB
http://pub1.ezboard.com/fultimatesubaru ... 4524.topic
Here's what he's replied to me.
>>>>>>>>
Hey there Josh, I'm pretty sure from what I know and others have told me, that the chip is no good to you with your car being naturally aspirated, but can you tell me if you have such thing as a 1989-91 turbo legacy in the USA, and if so what motor was it fitted with ej20t or ej22t , if you do have ej20t motors in early subbies, let me know , and see if you can hook me up with someone who has one, so we can try this chip in your US spec vehicles, you can only use it with 8 bit cpu's and you must run at least 96 octane fuel, or boy oh boy you'll regret it!! lol, but I'm not kidding you its about a 25-35kW increase in power which aint to be sneezed at.. I'm expecting to receive some code soon for what we call a group n minus chip, its a bit tamer than the group n, it only runs about 14psi boost(1bar) so that could be of interest to someone as well, let me know what you can find out, (ps I have someone working on cracking the source code, we are pretty sure all you guys are wrong about it being obd1(whatever that is, I assume its some sort of Motorola coding, this must only be for the factory code), we think its a variant of C or C++, when I find out I will let you know, and if it turns out to be C, then I can easily rewrite new source code for your NA subbie.
>>>>>>>>>
So if any of you are interested in helping him out, shoot him an email thecates@paradise.net.nz
I know I'd love to have this valuable info......and possibly the power
Josh
************************************
Josh Colombo
<mailto:Josh@surrealmirage.com> Josh@surrealmirage.com
"Life, an ever-changing melody
of beats and rhythm" - ME
************************************
ADVERTISEMENT
<http://rd.yahoo.com/M=194081.2053425.35 ... ?code=3225>
<http://rd.yahoo.com/M=194081.2053425.35 ... ?code=3225>
Height: 4 5 6 7 ft 0 1 2 3 4 5 6 7 8 9 10 11 in
Weight:
Sex: F M
<http://us.adserver.yahoo.com/l?M=194081 ... =552841741>
To unsubscribe from this group, please send an email to:
BC-BFLegacyWorks-unsubscribe@egroups.com
zZz <http://docs.yahoo.com/info/terms/> .