1998 240sx swap SR20DET REDTOP OBD problem

For discussion of front-drive SR20DE, SR20VE and SR20DET engines!
j_s14
Posts: 33
Joined: Wed May 19, 2010 1:54 am
Car: s14
Location: vancouver bc

Post

hey guys

my friend got 1998 240sx with S13 redtop swap, everything runs properly and perfect. But in Canada, 1998+ car need OBD2 to pass emission, right now aircared computer can't detect the OBD2, since it's OBD1 for S13, so my friend can't run and pass aircared.

any idea how to solve this?
anything out there can plug and play or replacepment ecu that will let OBD2 scanner detect?and runs S13 redtop sr20

thanks


compactfean
Posts: 2602
Joined: Thu Dec 03, 2009 10:28 am
Car: 89 240sx s13 sr gt3071r 23psi
B14 sentra ser sr20de-t 7psi
daily
Location: reno nv

Post

This is the wrong section but the answer is no. jdm motors do not use a obd2 protocall. If there is a way, the only thing I could think of is if you wired up a b14 or b15 sentra, harness ecu and obd2 connector and had that ecu tuned for your setup. You would pretty much have to wire up the entire setup to work like a sentra with a obd2 sentra. My best suggestion is to call jwt.

j_s14
Posts: 33
Joined: Wed May 19, 2010 1:54 am
Car: s14
Location: vancouver bc

Post

oops, sorry wrong section,

but thanks for the info!

compactfean
Posts: 2602
Joined: Thu Dec 03, 2009 10:28 am
Car: 89 240sx s13 sr gt3071r 23psi
B14 sentra ser sr20de-t 7psi
daily
Location: reno nv

Post

I've always wanted to do an s14 obd2 sr20det swap using the jwt ecu from a b14 sentra ser with the harness adapted to the s14 using the stock s14 obd2 connector just to fait its possible (there isn't any reason it couldnt be done) but ask the swaps I've done, nobody ever wants to go that extra mile.

Seishuku
Posts: 498
Joined: Fri May 13, 2005 6:19 pm
Car: 1987 Nissan S12, 5-speed, SR20DE+T 50trim T3@15PSI, Megasquirt 1 029y4

Post

you would have to swap in a distributor from an S14 SR20DE, the sentra ECU can't support coil on plug.

compactfean
Posts: 2602
Joined: Thu Dec 03, 2009 10:28 am
Car: 89 240sx s13 sr gt3071r 23psi
B14 sentra ser sr20de-t 7psi
daily
Location: reno nv

Post

Wiring specialties is working on that very problem. I was talking to them about making a p&p harness for that ecu and he said there should be a something out there available to keep the cop and would get back to me.


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