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i have a 99-00 civic d15z4 engine my ecu p2c-y01 i saw something on sfi and obd1..can u tell me what i have here cause im confused?? i only have 2 connectors

Welcome, tell us more about your car, modifications you did etc
It's seems that your ecu is SFI but for sure look up at manual if your injectors works independent (then will be obd2) or if they work in pair (SFI)

OBD2 OBD1 have 3 connectors and 4 independent working fuel injectors
SFI has 2 plugs and 2 pairs of working fuel injectors

Sorry bout that....My car is a 99 lxi with a d15z4 engine equivalent to the b7/a6 ecu p2c-y01 mods goes as follows

engine:
i/h/e decat and cold air all heat wrapped k&N filter
y8 intake manifold swap
240cc injectors
b&m adj fuel pressure regulator 40 psi idle
nology plug wires & iradium plugs
msd ss blaster coil
nrg trq damper
megan racing lighten crank pulley
mishimoto racing rad
Nrg ground kit

transmission:
s8g gear box (k4d) 4.25 FD
competition stage one copper clutch with hd pressure plate
xact prolite 8.4 lbs flywheel
buddy club race spec short shifter
(soon comming this month close ration road/race gear set)

suspension/brakes/wheels:
skunk2 lowering sprins(soon this mth eibach coilovers)
megan racing h brace,RL tie rod,polished FU strut
DC2 type r 96 spec big brake conversion
DC2 type r 96 4x114 light weight oem rims

Interior:
DC2 type r 96-98 recaro seats


PS: how do u check if the injectors work in pairs

alexfos101 wrote: PS: how do u check if the injectors work in pairs

Check the 26pin connector of ecu and if there pin1 BRN/YEL color and pin2 RED/BLU color wires then it is SFI
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Dodo wrote: "Injectors:
The injector issue is as follows, the engine has 4 injectors. The stock D14A3 ECU has only 2 signal wires going to the injectors. A normal OBD1 ECU has 4 separate signal wires going to the four separate injectors. That is what we want. On the stock D14A3 and D14A4 the 2 wires from the ECU are splitted in 2 by 2 is 4 wires to the 4 injectors. This splitting is done in the so-called splitter, found above the passengers feet."


So to help yourself to be sure 100% if your car is SFI read this OBD1 swap D14A3/4 (upd.)
from here http://dodo-upgrades.nl/

Good specs and modifications has your car.
How much power it is have?
Did you swap the IM (intake manifold)? Or is the stock one?
S8G gearbox from which car it comes from? I am asking because I think all the 96-00 civic has s40 gearboxes

my car makes 143bph the intake mainfold is a swap from a d15b 3 stage i had the down draft intake before the s8g come from a 25th anniversary delsol si i had a s40 A000 before becuase my car is non vtec came with that box from the dealer it was destroyed so i switched to a to B000 si box it was a good change.. yes an all 96-00 has s40 they come wit steel forks..upgrade

Little correction because I suggest before wrong link
so the correct one is this OBD1 swap D14A3/4 (upd.)
"So to help yourself to be sure 100% if your car is SFI read this OBD1 swap D14A3/4 (upd.)
from here http://dodo-upgrades.nl/"

Great horsepower makes your engine but how it outputs such number without ecu tuning?

idk that wat it said on d dyno so i now want to go into ecu tuning see how much more i can make also my car local to my country has no restrictions on the ecu speed cut fuel cut things like that no o2 sensor nun prob that helped i still have to check my ecu an see if it is SFI

so if its not how can it be obd2a i mean it has 26 pin with 2 rows are there cases like that