Ok, I've been stumped for a few days now as to what OBD my car is actually running and figured I see if you guys could maybe tell me what my car is. I got an 89 civic dx with a 96 ls motor. The ecu that I'm running is a PR4 from a 90-91 integra rs. Now before I get flamed, I did not install this motor in the car and I cant figure out which OBD I am since I keep reading contradicting posts on forums. Hence, why I'm asking now...

Additional information is (I dont know if this information is needed but whatever) that I have an o2 sensor hooked and currently working, I have no resistor box hooked up or installed, and though the motor actually has two o2 sensors, only ONE is actually hooked up.

Please tell me if you guys need more information in order to determine whether or not the car is OBD0 or OBD1.

I also have pictures upon request if that will help resolve my question.

TIA - Jordan


Modified by beeateteen at 4:50 PM 6/14/2005

 

Since your ecu is from a 90-91 Teg, you are OBD0. I'm not sure how they wired the injectors to work without a resistor box however.

 

they probably used the 96 teggy injectors so you dont need a resistor box

 

I also read where my ECU has been offered to two different ways, OBD0 and nonOBD. How can I tell the difference between the two? and my set-up is definitely OBD0?

I am asking because I'm in the midst of purchasing some bigger injectors and don't want to order the wrong ones and have to wait to get new ones re-sent.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beeateteen &raquo;</TD></TR><TR><TD CLASS="quote">I also read where my ECU has been offered to two different ways, OBD0 and nonOBD. How can I tell the difference between the two? and my set-up is definitely OBD0? </TD></TR></TABLE>

There is no difference. Non-obd = pre obd = obd 0

Yes your setup is obd-0. Pr4 ecu can only be run obd 0.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mach69 &raquo;</TD></TR><TR><TD CLASS="quote">

There is no difference. Non-obd = pre obd = obd 0

Yes your setup is obd-0. Pr4 ecu can only be run obd 0.</TD></TR></TABLE>

There are OBD1 PR4's too. Are you planning on some kind of forced induction? Why do you need larger injectors?

 

Yes, I'm actually finishing my install on a turbo set-up and injectors are one of the last things I need. However, they are offered in high impedance and low and I just want to make sure I order the correct ones.

 

Can someone please chime in who can give me a definite answer and possibly a concrete reason as to why? (I know other people posted answers already but I just want to be totally sure) I'm ordering more than just injectors from this company and once I receive my shipment I can finally turbo this car!

Again, it's a 96 ls motor in an 89 civic dx and it is all running off of a 90-91 PR4 ecu. The question is which OBD am I (OBD0 or OBD1)?

TIA