Specifications of stock Ecus and electronics

Wiring up and working with the D14 ECUs
User avatar
ilya
Posts: 565
Joined: Wed Aug 05, 2009 1:27 pm
Location: Russia
Contact:

Re: Specifications of stock Ecus and electronics

Post by ilya »

Hi every body) litle info.

big proflem after build D-Engine, it's configure fuel card. why? becouse you haven't stock BASE MAP. because u don't have binary file old D14A4 Fuelcard.
I find some ECU. it's 37820-P1J-EXX it's like OBD1 (yep u can chip it) and it ecu have 1.4 BASE MAP!

this ecu from MA8 or like it CIVIC. if somebody have stock BIN or have it's ECU tell me.


P1J best ECU for starting chip tuning in D14A4. But it's haven't VTEC switch.
but you need 240 cc injectors, and it have IMMO.
Last edited by ilya on Sat Dec 14, 2013 3:23 pm, edited 1 time in total.
viewtopic.php?f=7&t=359 how2swap IM
EJ9 Russian Helper http://www.ej9.ru
Full Scheme SFI-OBD1 PDF [ENG]
SofRom 1.15 R2 - Chippest RTP Emulator like Hondata S300 and Moates Ostrich

User avatar
mynameisowen
Posts: 1307
Joined: Thu Aug 20, 2009 3:38 am
Location: London or Oxford, England
Contact:

Re: Specifications of stock Ecus and electronics

Post by mynameisowen »

What cars is it found in?
1996 EJ9 Civic
1998 BB8 Prelude Motegi VTi
1998, B16A2 EK4 Civic VTi

Aims:
EJ9 - Now my GF's car.
BB8 - Rebuild after crash damage to front end.
EK4 - Daily driver. Strip and track prep once prelude project complete

User avatar
ilya
Posts: 565
Joined: Wed Aug 05, 2009 1:27 pm
Location: Russia
Contact:

Re: Specifications of stock Ecus and electronics

Post by ilya »

mynameisowen wrote:What cars is it found in?
d14a2 d14a5 engine maybe in d14a8
viewtopic.php?f=7&t=359 how2swap IM
EJ9 Russian Helper http://www.ej9.ru
Full Scheme SFI-OBD1 PDF [ENG]
SofRom 1.15 R2 - Chippest RTP Emulator like Hondata S300 and Moates Ostrich

User avatar
ilya
Posts: 565
Joined: Wed Aug 05, 2009 1:27 pm
Location: Russia
Contact:

Re: Specifications of stock Ecus and electronics

Post by ilya »

i continue my post by P1J (37820-P1J-E11) chip OKI M66207-368
today i could read stock d14a2 firmware (90hp 1.4 Mechanical) and read it in Crome. now i have Base for my D14,P28.
some spec
rev:7239 rpm
idle:750
novtec ))
no knock sensor
no atmospheric presure sensor
no injector test circuit
Oxygen sensor with heater

and some pic)

why i need it? it's start firmware for configure u own D14 after swap ECU SFI->OBD1. of course CamShaft D14A2 and D14A4\A3 (z3\z4) different but it better them install map from d15 or d16)

yeap) u first who see it information) in week i publish it on another sites)

Image
Image
Image
viewtopic.php?f=7&t=359 how2swap IM
EJ9 Russian Helper http://www.ej9.ru
Full Scheme SFI-OBD1 PDF [ENG]
SofRom 1.15 R2 - Chippest RTP Emulator like Hondata S300 and Moates Ostrich

User avatar
ilya
Posts: 565
Joined: Wed Aug 05, 2009 1:27 pm
Location: Russia
Contact:

Re: Specifications of stock Ecus and electronics

Post by ilya »

some comparsion with dodo old firmware (only first fuel- and inginition map) ;)

Image
Image
viewtopic.php?f=7&t=359 how2swap IM
EJ9 Russian Helper http://www.ej9.ru
Full Scheme SFI-OBD1 PDF [ENG]
SofRom 1.15 R2 - Chippest RTP Emulator like Hondata S300 and Moates Ostrich

User avatar
saxophonias
Posts: 2592
Joined: Fri Jul 03, 2009 6:03 am

Re: Specifications of stock Ecus and electronics

Post by saxophonias »

thanks for sharing. Is there a way to change the advance during the first minutes of engine function (until the engine gets warm) in order to reduce the fuel consumption of the first minutes, which by the way is very high?

User avatar
ilya
Posts: 565
Joined: Wed Aug 05, 2009 1:27 pm
Location: Russia
Contact:

Re: Specifications of stock Ecus and electronics

Post by ilya »

of course) u Could up AFR in range 300-1500 RPM with <45-50 KPA (500mbar) to UP 15.5 15.9
see some table for example,

Image

*red line - torque
*blue line - economic
*left part more rich afr (low afr 10-13)
*right part lean afr (15-17)


Image
viewtopic.php?f=7&t=359 how2swap IM
EJ9 Russian Helper http://www.ej9.ru
Full Scheme SFI-OBD1 PDF [ENG]
SofRom 1.15 R2 - Chippest RTP Emulator like Hondata S300 and Moates Ostrich

User avatar
ilya
Posts: 565
Joined: Wed Aug 05, 2009 1:27 pm
Location: Russia
Contact:

Re: Specifications of stock Ecus and electronics

Post by ilya »

D14Z2 (99-2000)
90HP


D14Z1, 75 37820-P3X-G11 (OBD2)

D14Z2, 90 37820-PHX-G11 MT (OBD2)
D14Z2, 90 37820-PHX-G92 AT


True OBD2B (B!) 4 separated Injectors, PGMFI,
20MHZ Osc
Main CPU OKI M66589-883 (AT) full name OKI MSM66589 / 66P589 / 66Q589
PDF name ApNote -> E2E1031-27-Y4

16-bit CPU
128 Kb ROM
64 Kb -> Memory (programs, maps)
4 Kb RAM
Minimum instruction execution time 100 Nsec @20 MHZ

Immo, 12 Pin Honda HIC-RL-01

Transistor keys:
- STA415A
- STA461C x2

MSM66589 used also in S2000 )))


+Rus Articles => http://www.ej9.ru/art/difference-d14z1- ... 4a4-d14z2/
viewtopic.php?f=7&t=359 how2swap IM
EJ9 Russian Helper http://www.ej9.ru
Full Scheme SFI-OBD1 PDF [ENG]
SofRom 1.15 R2 - Chippest RTP Emulator like Hondata S300 and Moates Ostrich

xchipx
Posts: 1
Joined: Mon Aug 18, 2014 9:44 pm

Re: Specifications of stock Ecus and electronics

Post by xchipx »

Good info.
However anyone thinking of buying a p1j ecu to map it must be very careful as not all of them are mapable.
I could be wrong but there could be an obd2a p1j and a obd2b p1j

User avatar
saxophonias
Posts: 2592
Joined: Fri Jul 03, 2009 6:03 am

Re: Specifications of stock Ecus and electronics

Post by saxophonias »

Not an expert in ecu tuning but I was really wondering whether there is a fuel cut off option in our ecus. I mean when you don't hit the gas pedal while driving (in a downhill let's say) the consumption is zero like the new cars or not?
Also, if we tune the ecu (obd1) can we change the time the ecu gives command for more fuel until the car is cold so as to drop fuel consumption?

Post Reply