d15b says rywire on the side... dono how to tell, i want to check the codes but dono how my cars been runnin like poop, and also i keep reading something about 02 sensors with 4 wires, thats what i have if it helps, dizzy has a jumper on it

 

what kind of vehicle?

 

89 civic hatch with a jdm d15b swap

 

do you see a PR3 or PW0 anywhere on your ECU?

 

there is no stickers at all, if u cant give me pics of options i can prob point it out

 

PW0 ECU


PR3 ECU


P28 ECU

 

soo i looked at it says RT on top (in permanent marker) and side sticker says

37820-p75-a51
831-14665B AX

then says RYWIRE in permanent marker

opened it up and has that chip with SST on it, i dono if thats normal or not

but then on the cables there 2 wires that just run out under the carpet, do i put those wires together for a CEL check? they are blue and orange

 

you have a p75 ecu from a ls that was chipped by rywire
it should be OBD1

edit: can you post pics of wires? is there a connector on the end of the wires?

 

^^^^ yup

 

and is the car throwing codes? or do you assume since its running bad its throwing codes?