TomR33 Posted June 12, 2003 Share Posted June 12, 2003 There is the comparison between 2 stock R33 GTST fuel maps. One is my 95 model and the other is unknown but stock (probably 94 model). Ignition maps are the same. Tom Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/ Share on other sites More sharing options...
TomR33 Posted June 12, 2003 Author Share Posted June 12, 2003 low octane fuel map comparison Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-375801 Share on other sites More sharing options...
meggala Posted June 12, 2003 Share Posted June 12, 2003 what soft ware are you using to view the maps ? Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-375807 Share on other sites More sharing options...
TomR33 Posted June 12, 2003 Author Share Posted June 12, 2003 Once downloaded i used Rom Editor 1.98.45 to view the maps. Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-375811 Share on other sites More sharing options...
Grim Posted June 12, 2003 Share Posted June 12, 2003 interesting.... Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-375817 Share on other sites More sharing options...
meggala Posted June 12, 2003 Share Posted June 12, 2003 morning grim Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-375830 Share on other sites More sharing options...
Guest INASNT Posted June 12, 2003 Share Posted June 12, 2003 The 95 ecu seem to be the best one around, doesent run so rich once on boost! Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-376244 Share on other sites More sharing options...
Jay95R33 Posted June 12, 2003 Share Posted June 12, 2003 Thanks Tom, I knew that they were different cause I felt a change when I went from my 95 ECU (now blown up ) to a 93 ECU. BUT NO ONE BELIEVED ME !!! Thanks for posting up some hard evidence BTW: Do you have the factory maps for the R33 GTS-t in BIN form, or what ever form they need to be to load them up in a Eprom? I'll see if I can load the stock R33 maps into a Eprom and socket that R32 ECU I have..... I should've asked you when I saw you last weekend. Good work. Jayson Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-376354 Share on other sites More sharing options...
TomR33 Posted June 12, 2003 Author Share Posted June 12, 2003 Jay, I have tried loading the stock R33 ROM data onto an EPROM and use it on R32 ECU. It doesn't work. The K constant is much larger and TP scale is different. R33 ECU must have a different algorithm to calculate the injector pulse time. Tom Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-376447 Share on other sites More sharing options...
whatsisname Posted June 12, 2003 Share Posted June 12, 2003 J, I thought it, you posted it Oh yeah, I was with you on this from the start mate! More evidence to add to the, '95's are better' line of thinking..... Bugalugs ran his stock ECU'd 95 GTS25t to a 13.4 @ near on 107mph at a private drag day last month. His car has a 3" exhaust off the turbo, pod filter, upped boost (12-13 or so psi) & FMIC. Nothing else! It also made 204rwkw at a dyno day last yr. 2 other GTS25t's on the same drag day (not 95's) had more mod's, including a Power FC & Microtech LT12. Bugalugs' car was equal to the LT12 car & faster then the PFC car! Both in ET & TS, & regardless of 60' times. Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-376967 Share on other sites More sharing options...
predator Posted June 12, 2003 Share Posted June 12, 2003 Makes sense, and in line with what a lot of people have suspected for a while. For it to be empiracally proven, you probably need to get multiple 94/93 ECU's and 95+ ECU's and load them in and see whether it holds the same. Here in melb a lot of R33's on dyno days and the like can produce some quite high figures (around 170rwkw) and still are running the stock cooler and stock computer... and some of the 93/94 guys (mine is a 94), even with a fair few more mods, only get 180-190rwkw. The ECU difference can account for some 10-20rwkw it seems. Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-377004 Share on other sites More sharing options...
Jay95R33 Posted June 12, 2003 Share Posted June 12, 2003 OMG - I bet he was happy !!! Now the next step is to identify the 'good' ECU's by their firmware version (the MEC no.). Then instead of buying a PFC, it'll be heaps cheaper to buy a 95 model ECU. Tom - damn shame about that. Hmmmm, I wonder what we can do about it, is it a case of try changing the values and see how it goes? It's a shame..... J Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-377010 Share on other sites More sharing options...
B-Man Posted June 12, 2003 Share Posted June 12, 2003 Sweet - now I'm selling my '95 ECU when I get my Autronic or Microtech !! Cheers for that !! Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-377024 Share on other sites More sharing options...
Guest RedLineGTR Posted June 12, 2003 Share Posted June 12, 2003 think the price for 95 ecus just rose.. Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-377074 Share on other sites More sharing options...
benm Posted June 12, 2003 Share Posted June 12, 2003 Originally posted by whatsisname His car has a 3" exhaust off the turbo, pod filter, upped boost (12-13 or so psi) & FMIC. Nothing else! It also made 204rwkw at a dyno day last yr. I have a '95 GTS-T ('95 ECU) with the same mods making 203rwkw whilst leaning out at the top. /me gold coats his ECU. Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-377136 Share on other sites More sharing options...
whatsisname Posted June 12, 2003 Share Posted June 12, 2003 I think the '95 model GTS25t's just became the prefered choice when buying on a very limited performance budget. I could've saved heaps if I'd have started with a '95! With the usual FMIC, exhaust, pod & extra boost the good ol' 94 ECU went filthy rich giving me a grand total of 126rwkw. The car felt like it too It took a Unichip & retune ($1200 later) to give me ~185rwkw. Bugalugs goes out & does the same basic mod's (without touching the ECU) kills my car on the dyno &, more importantly, on the drag strip! Originally posted by RedLineGTR think the price for 95 ecus just rose.. Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-377978 Share on other sites More sharing options...
Ash Posted June 12, 2003 Share Posted June 12, 2003 what about 97 ecu's? Different again? Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-377993 Share on other sites More sharing options...
Ronin 09 Posted June 12, 2003 Share Posted June 12, 2003 For sale soon... '95 ECU to be replaced by PFC Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-378002 Share on other sites More sharing options...
Duncan Posted June 13, 2003 Share Posted June 13, 2003 Yeah, I'm wish ash's question. my 97 ecu runs quite lean, possibly different to the earlier maps as well. Would be interesting to see some later model cars if you hve one handy in canberra. Thanks for doing those comparos tomr33. Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-378401 Share on other sites More sharing options...
TomR33 Posted June 13, 2003 Author Share Posted June 13, 2003 Yeah, I would be interested to see series II maps too but don't have them. I should be able to download maps from any Nissan ECU (except R34 GTR) and do the comparison, just need access to the car or ECU for about half an hour. Link to comment https://www.sau.com.au/forums/topic/18050-not-all-stock-ecr33-ecus-are-the-same/#findComment-378490 Share on other sites More sharing options...
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