Specifications of stock Ecus and electronics

[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.

[mynameisowen]

What cars is it found in?

[ilya]

What cars is it found in?

d14a2 d14a5 engine maybe in d14a8

[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)

[ilya]

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

[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?

[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,



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

[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/

[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

[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?