RedDrifter Posted March 29, 2004 Share Posted March 29, 2004 Just trying to find out if there are more than one rev limit addresses in the RB20DET (ECCS). The reason I ask is that I decided to put my rev limiter up to 8200 and it hasn't change at all. Ive always been under the impression that it was set at 7800 and was found at 7FB4(address line) in the eprom. Any ideas guys? Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/ Share on other sites More sharing options...
RedDrifter Posted April 4, 2004 Author Share Posted April 4, 2004 Well if anyone is interested I did end up finding what the second address is for the rev limiter. Ok address one is 7fb4(and this value is 9C in hex which ends up being 7800rpm) and the second is 7f8b (and his value is 97 in hex which ends up being 7550rpm) I tested both these values and these seem correct. Oh would anybody be interested in me posting up some stock binary files for a couple of cars. I have a R32gtr and an R32 gts-t stock bin file plus a few others. Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-759885 Share on other sites More sharing options...
sprint32 Posted April 4, 2004 Share Posted April 4, 2004 Yeah, Deffinatley!!!! Could be helpfull to start modifying maps now before I get the gear I need to do the job. Incidently, what stuff do I need? no-one seems to be able to tell me. Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-759893 Share on other sites More sharing options...
RedDrifter Posted April 5, 2004 Author Share Posted April 5, 2004 Firstly you need to get you ecu's eprom removed and a 28pin socket put into its place so you can insert/remove the eprom easily. If you aren't to confident to do this just take it to a tv repair shop and get them to do it for a small cost. Secondly you need an eprom reader/writer that will allow you to write new eproms. Theres a good one that you can buy on www.batronix.com that uses the pc usb port. Very good as you dont need a power source for it. They give you the software for it too. Thirdly you need the software that alows you to modify the eproms data so you can change the rev limits/ fuel cuts / fuel maps / timing maps etc. I use the romeditor software which is located at www.925style.com/editor_direct.html. You need to download the address file for you specific car etc. I'll get my work laptop online later today and I'll post up the bin files of the RB20DET and the RB26DETT with the adress file for the RB20DET which I had to modify to allow for the adjustment of second rev limiter and a few othe minor things. I'm guessing you have an R32 GTS-t ? I'll post up URL of a site that is dedicated to the 300ZX Z32 and it has a very in depth explaiation of the ecu. The same basic principals apply to the R32 GTR/GTS-T. I just don't know the url off the top of my head but is bookmarked on the work laptop. Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-760947 Share on other sites More sharing options...
sprint32 Posted April 5, 2004 Share Posted April 5, 2004 cool, much appreciated Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-762307 Share on other sites More sharing options...
StraightSix Posted April 5, 2004 Share Posted April 5, 2004 Oh would anybody be interested in me posting up some stock binary files for a couple of cars. I have a R32gtr and an R32 gts-t stock bin file plus a few others. Please do, I'd love to learn more about this Cheers Jason Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-763144 Share on other sites More sharing options...
Chef_32 Posted April 6, 2004 Share Posted April 6, 2004 I'm interested too. but i can't seen to find the eprom reader writer in that website. i don't really know about this stuff, but whats the chance of really screwwing up you're car?? Forgive my ignorance Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-763540 Share on other sites More sharing options...
RBN1 Posted April 6, 2004 Share Posted April 6, 2004 This is great information! Would really appreciate that link to the Z32 AFM as I have a plug-in eeprom for both these cars and would like info on how to make changes etc. Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-763924 Share on other sites More sharing options...
RedDrifter Posted April 6, 2004 Author Share Posted April 6, 2004 That zed site is http://cherrypicker.tripod.com/turboupgrad...0dett/id10.html The HCR32_256_Rev2.zip is the address file revised for the RB20DET(R32). The Bnr32.zip is the address file for the R32 GTR. R32 GTS-T ECCS RB20DETStock.zip is the stock bin file I read from my eeprom and is from a 92 R32 GTS-t type M. R32 GTR RB26DETT STOCK.zip is the stock bin file for the R32 GTR. I'll post up some info on how to use romeditor and the basic theory behing the nissan ecu's at a later date when I get the chance. Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-763973 Share on other sites More sharing options...
sprint32 Posted April 6, 2004 Share Posted April 6, 2004 I tried the link and downloaded the file from 925style but it wont execute. Only 2Kb in size. Is this right? or do I need something else to get it going? Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-764160 Share on other sites More sharing options...
sprint32 Posted April 6, 2004 Share Posted April 6, 2004 Dont worry. figured it out. Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-764162 Share on other sites More sharing options...
sprint32 Posted April 6, 2004 Share Posted April 6, 2004 No, actually it says there are no files to extract!?? maybe you could pm me the program? Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-764172 Share on other sites More sharing options...
StraightSix Posted April 6, 2004 Share Posted April 6, 2004 There's another one available at http://www.boostcruising.com/silvia/romstu...uff/romedit.zip - maybe the same one? Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-765441 Share on other sites More sharing options...
RedDrifter Posted April 7, 2004 Author Share Posted April 7, 2004 Yeah that file @ http://www.boostcruising.com/silvia/romstu...uff/romedit.zip is the same as the one I have. Thanx StraightSix. I just fixed up my post on the files so you all know what the files are. I didn't explain it too well the first time. Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-766048 Share on other sites More sharing options...
StraightSix Posted April 13, 2004 Share Posted April 13, 2004 Something I was wondering about . . . would a good approach be to tune with piggybacks and then transfer that tune to a chip? Or would the fact that the piggybacks can only give you values that are already in the factory chip be too limiting? Oh and RD would you object if I reposted those files on GTRCanada? Cheers Jason Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-779244 Share on other sites More sharing options...
RedDrifter Posted April 14, 2004 Author Share Posted April 14, 2004 Piggy back computers are really limited to what the ecu can do in the end, well from what I understand anyway. I would say it would be just as easy to start from the ecu chip rather than to transfere from a piggy back. As for the files thats fine I don't mind at all. Link to comment https://www.sau.com.au/forums/topic/37375-rb20-ecu-addressing-qs/#findComment-779822 Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now