Well, my friend is an elec. engineering major, and just happens to have an sr20'd s14 that is pretty quick. He burns his own eproms and is pretty good at it.
I was curious what is involved for the rb20 ecu. Do we need to add a daughterboard? Or can a socket just be soldered in and then pop in a new chip?
I know Megalla had mentioned it before and I thought it might be a cheap alternative to Greddy E-manage, etc.
Thanks!
Nick
About burning EPROM's and such
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goofynick6
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- Car: 1995 S14.5 RB20DET
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goofynick6
- Posts: 1216
- Joined: Thu Feb 05, 2004 9:58 am
- Car: 1995 S14.5 RB20DET
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frosted flakes
- Posts: 410
- Joined: Tue May 13, 2003 9:02 am
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read
http://tuning.silviansw.com/th....html
i contacted the guy he said this:
"Hi Tony,
Glad you like the site.
The RB20DET ecu is in fact easier to retune than the SR20 edu. Reasonbeing that the EPROM is surface mounted, which means you don't need adaughterboard.
When you open the casing you will se an eprom mounted there. You willneed to unsolder this and then solder in a socket in its place so thatthe eprom can be pulled in and out repeatedly.
You will a dyno for tuning, as well as an operator. Using a epromprogrammer you will be able to pull the stock mapping from the stockeprom. The address file is either on my site or the rom editor site, butit's not hard to come across with some searching.
Tuning will be doing a dyno run and then making changes, just like anyother tune job on any other aftermarket management system.
It's a good idea to kep the original EPROM untouched and use anew chipto burn any changes onto. A reprogrammable EEPROM might make thingsquicker too, as would someone with an emulator.
So apart from that, everything else should be on the site, so make sureyou read it before asking more questions.
Good luck,
Michael"
well there you go...
http://tuning.silviansw.com/th....html
i contacted the guy he said this:
"Hi Tony,
Glad you like the site.
The RB20DET ecu is in fact easier to retune than the SR20 edu. Reasonbeing that the EPROM is surface mounted, which means you don't need adaughterboard.
When you open the casing you will se an eprom mounted there. You willneed to unsolder this and then solder in a socket in its place so thatthe eprom can be pulled in and out repeatedly.
You will a dyno for tuning, as well as an operator. Using a epromprogrammer you will be able to pull the stock mapping from the stockeprom. The address file is either on my site or the rom editor site, butit's not hard to come across with some searching.
Tuning will be doing a dyno run and then making changes, just like anyother tune job on any other aftermarket management system.
It's a good idea to kep the original EPROM untouched and use anew chipto burn any changes onto. A reprogrammable EEPROM might make thingsquicker too, as would someone with an emulator.
So apart from that, everything else should be on the site, so make sureyou read it before asking more questions.
Good luck,
Michael"
well there you go...
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frosted flakes
- Posts: 410
- Joined: Tue May 13, 2003 9:02 am
- Contact:
this site
http://www.925style.com/editor_direct.html
has a free program for editing fuel maps and you can download the skylines ecu chip then reprogram and burn to a chip and there u go...
http://www.925style.com/editor_direct.html
has a free program for editing fuel maps and you can download the skylines ecu chip then reprogram and burn to a chip and there u go...
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goofynick6
- Posts: 1216
- Joined: Thu Feb 05, 2004 9:58 am
- Car: 1995 S14.5 RB20DET
All he is doing is writing a PROGRAM that modifies the BIN file, just as the 925 program does... To be perfectly honest I would just use the 925 thing and then use the pocketROMulator and boom tuning on the fly...
is there anything special that his program is doing that the 925 doesnt?
Murray <- Computer engineer =]BTW... I take it this is all the JWT ecu really is... just a socketed stock ECU with a EEPROM in it
is there anything special that his program is doing that the 925 doesnt?
Murray <- Computer engineer =]BTW... I take it this is all the JWT ecu really is... just a socketed stock ECU with a EEPROM in it
All he is doing is writing a PROGRAM that modifies the BIN file, just as the 925 program does... To be perfectly honest I would just use the 925 thing and then use the pocketROMulator and boom tuning on the fly...
is there anything special that his program is doing that the 925 doesnt?
Murray <- Computer engineer =]BTW... I take it this is all the JWT ecu really is... just a socketed stock ECU with a EEPROM in it
is there anything special that his program is doing that the 925 doesnt?
Murray <- Computer engineer =]BTW... I take it this is all the JWT ecu really is... just a socketed stock ECU with a EEPROM in it
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goofynick6
- Posts: 1216
- Joined: Thu Feb 05, 2004 9:58 am
- Car: 1995 S14.5 RB20DET
Well I'm no idiot, but I'm not a computer engineer either, so I wans't totally sure. But, the program looks like it is a much easier to use program then 925's, and the new demo will allow you to pick the maf and injectors you have, which makes things a lot easier.
The fact that you can basically pay $180 for a romulator and you make your ecu into an adjustable standalone (kinda like dsmlink) I find amazing. I'm just surprised more people don't do this, and instead spend $1000+ on microtec, etc.
Nick
The fact that you can basically pay $180 for a romulator and you make your ecu into an adjustable standalone (kinda like dsmlink) I find amazing. I'm just surprised more people don't do this, and instead spend $1000+ on microtec, etc.
Nick
O no problem man I definately didnt mean to come off ****y at all..
Your basically right, I looked at both programs and I would TOTALLY agree the newest program (http://www.engineers.auckland.ac.nz/~lmoo016/) is definately easier to use. The injector and AFM calcs will probably be pretty rough ideas but at least it will give you something to start from..
Basically when this guy is done with the software which to be perfectly honest isnt too hard to do, then you would download the software from him, buy the ROMulator... Now since the software is DESIGNED exactly for the romulator you are good to go... And basically yes, you would have a DSMlink type system, with all the basics of a standalone..
* However it will not have data retrevial software.
*NOTE: you will need to socket your ECU.
Yea that is kinda shady of JWT, I guess you can kind of say at least they put a little tuning into the chips and have already played with the maps such as the timing and fuel... Does it really warrant the hundreds of dollars... no way. Hell send ur ECU over here and I'll socket it and burn an EEPROM for whatever my time is worth (far less than hundreds =] )
Your basically right, I looked at both programs and I would TOTALLY agree the newest program (http://www.engineers.auckland.ac.nz/~lmoo016/) is definately easier to use. The injector and AFM calcs will probably be pretty rough ideas but at least it will give you something to start from..
Basically when this guy is done with the software which to be perfectly honest isnt too hard to do, then you would download the software from him, buy the ROMulator... Now since the software is DESIGNED exactly for the romulator you are good to go... And basically yes, you would have a DSMlink type system, with all the basics of a standalone..
* However it will not have data retrevial software.*NOTE: you will need to socket your ECU.
Yea that is kinda shady of JWT, I guess you can kind of say at least they put a little tuning into the chips and have already played with the maps such as the timing and fuel... Does it really warrant the hundreds of dollars... no way. Hell send ur ECU over here and I'll socket it and burn an EEPROM for whatever my time is worth (far less than hundreds =] )
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goofynick6
- Posts: 1216
- Joined: Thu Feb 05, 2004 9:58 am
- Car: 1995 S14.5 RB20DET
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goofynick6
- Posts: 1216
- Joined: Thu Feb 05, 2004 9:58 am
- Car: 1995 S14.5 RB20DET
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goofynick6
- Posts: 1216
- Joined: Thu Feb 05, 2004 9:58 am
- Car: 1995 S14.5 RB20DET
My friend agreed to let me rent his techedge v2.0 wideband, and that has datalogging for rpm vs. a/f vs. other 0-5volt signals, like tps. The only thing I won't be able to datalog is knock, and thats' something I really wanted to be able to log...however, I'm thinking there has to be a way to log it since it all goes thru a laptop..ya know? I might have to get knocklink or something, but I'll run conservative timing until then.
I'm excited, and my 550cc injectors are getting shipped tomorrow
Nick
I'm excited, and my 550cc injectors are getting shipped tomorrow
Nick