Hi.
I have bought remaped N3A7 ecu (okada eng). It has a daugthter board inside of it with 27c512 eprom. I have read 27c256 eprom in stanadart location (spark maps, boost control, etc) which is ok, but when I read added 27c512 eprom, I cant find fuel map in it.
Daughter board looks like this:

That board also has two chips with grinded off marking. One of them (dip20) is probably GAL16, as other board uses it, other is SMD type under eprom socket.
Does anybody know, how to find/read fuel map in that 27c512 eprom bin? There is couple of pages in japanese, but none of them has detailed info. One of them (fuel map at the end of page):
‘OŠú‚Wbit‚d‚b‚t‚Å‚m‚`‚Ì‚P‚R‚a‚ð�§Œä‚·‚é

 

Too difficult to understand that lingo. Hence why most people buy a stand alone ecu. They're much more customizable than anything that has been remapped. I would suggest that you do the same.

 

table wont be difficult to understand, if i could find it... Yes, stand alones ar much more customizable, but most of them are much lower spec than OEM ecu... And I dont want to increase power, or so, just to lean out mixuture at idle, low speed/low load zones, as my idle ARF is ~11,5 and mentioned zones ~11,5-12,5...

 

Why does everyone on this forum treat the FD stock

 

I'm afraid you won't find much help on this site regarding stock ECU modifications. It's really a shame considering how common it is in Japan.

What software are you using? ChipMax or similar?