BlackZenki82

so here's the question, i have a 1995, was told it was OBDI by sYdeWaYz, who happens to be my neighbor, but it has a OBDII plug in port? he said it was a Hybrid... OBDI with an OBDII port.... this has got me seriously confused.... if it is OBDI i would have been tuning it a while ago... as a side note, the OBDII plug is under the glove box to left, like next to the tranny tunnel, not on it just on that side... in the FSM i have, it shows the OBDII port IN the glovebox to the upper left..... mad confused.....

the build date is 9/94 if that helps.....

battosaii930

iTrader: (2)

its obd1 i know the plug your talking about it was on my old obd1 s14 looks like it but its white.

all obd2 plugs are black and s14 obd2 plug is on the drivers side under the plastic panel i know cause my red s14 is 96 and is obd2.

also another sure fire way to figure it out look at the ECU plug my obd1 s14 95 had a blue plug going to the ECU looks like sr20 ECU plug but my obd2 96 s14 has a white plug going into the ECU with alot more pins

BlackZenki82

so it IS an OBDI but with a OBDII port.... does this mean my tuning options are wide open and easy??????

NiSmO Knight

iTrader: (1)

Vince taught me that on OBD I, the cat is up close on the header. OBD II is down below.

BlackZenki82

my cat was on the downpipe, and i have a single wire o2 sensor on the header... i think that matters

Rotary_tech

yeah, single wire O2=OBD1

fadedsilvia

if im not mistaken but didnt they swtich to obdII halfway through 1995?, cuz i have a 95 an my obdII scanner works on it through the port that blackzenki82 was talkin bout in the first post, an mine is on the passenger side not the driver side, jus like blackzenki82's
ill check out my 02 sensors an ecu an let u no what else i find

Biggamehit

iTrader: (2)

yes its the half way point.

if you have o2 sensor and a obd1 ecu you are well obd1

fadedsilvia

ok so iv ckeched out some stuff on my car this weekend while doin the clutch
and i am also mad confused now, i have 2 o2 sensors, one one the exhaust manifold with one green wire and another farther down the exhaust with 3 wires (white black and red), and my cat is farther down in the exhaust, i have an obdII port on the passenger side of the tranny tunnel and an obd1 port on the drivers side wheres its supposed to be, i can get codes thru the obdII port, and i havnt checked the ECU or if i can get codes through the OBDI port yet soo ill do that an let u guys no!, ill ask the nissan guys if they know nething bout it too

BlackZenki82

it's an OBD1 with an OBD2 consult port, thats the port thats on the passanger ide... i just found that out, so we're good to go..... but i didn't know there was a OBD1 port on the drivers side.... i'll have to check that out.... yeah one wire to the 1st o2 sensor is OBD1... and that thing further downstream you think is a cat? it's not, it's hollow... the cat is actually on the down pipe....

fadedsilvia

its hollow? wtf is it there for? is there a tube going through it? cuz other wise thats very bad for an exhaust, hot gasses will sit in that **** an itll disrupt flow, im not likin this lol
but im def glad its obdI!! woohoo! that makes my KA-T project so much less expensive! haha

BlackZenki82

yeah i know about being happy bout OBD1.... awesome.. i'm actually trading some ****ty *** wheels for a T3 off a RB25 with elbow and lines... getting the party started!!!. and yeah it's hollow as far as i checked, when i did my header and testpipe, the downpipe had what looked like a cat in it, up towards the top... hence the reason the after cat o2 sensor in on the DP... and when i put the test pipe in, and pulled the old cat looking thing out... it was empty..... i have no idea...

fadedsilvia

lol well f@#$ that thing, thats comin out asap!, an i already have 2 turbos for my car, one off of a saab lol its so cute an tiny, the other off a 7mgte supra engine i belive, but i have alot of collecting of parts to do before i can throw it on

BlackZenki82

same here.... i got a long ways to go, but should be worth it... and i just got told the RB25 turbo wasn't worth it's weight in poop... so lets see about that...