what the difference between a PR3-J00 and a PR3 Ecu?

 

regular pr3 is for the 88-91 JDM B16A for EF8/9 (obd0), while the pr3-j00 and j51 are for the 92 JDM B16 for EF8/9 (obd1).

 

is that why my car is running like **** due to that my car is a obd 0 and the ecu they gave me is a obd 1?

 

If both your motor and ecu obd1, but your car's harness is obd0 then I will find you a link that describes how to get around it, you won't even need a new harness I think, you just need to rewire your distributors and injectors, in addition to the vtec and o2.

This is taken from Dan Platt's teg tip on http://www.g2ic.com
Engine: 1992-up JDM B16A
Displacement: 1595cc
Compression Ratio: 10.4:1
Hp/Torque: 170hp@7800rpm/116lb-ft@7300
Transmission: Y21, S4C (hydraulic)

This is an OBD-1 engine from 92-up JDM Civics. It has 10hp and 4lb-ft of torque more than the Integra XSi B16A. This is obviously created by the higher compression ratio of this engine. However, this engine is an OBD-1 Engine so it takes a little more work to get it in, but not much. Because this engine is OBD-1, it comes with gray colored plugs on the harness which are not compatible with your 90-91 Teg, but we’ll touch on how to get around that in a bit. Another thing to consider is price. This engine is more expensive than the XSi Integra B16A. They usually run for about $1500-$2000, but I have seen them as high as $2500. Again, these motors come from Japan and will usually have 40,000 miles or less on them. These are the only items of concern with this swap:


· Wiring Harness-You will need to use your existing B18A1 cream plug wiring harness. It will plug into everything on the motor except for the distributor and injectors. And just like the XSi B16a, you’ll have to add the 3 wires for VTEC and the second oxygen sensor. Also, the temperature switch on this motor is located on the thermostat housing unlike your B18A1 which is located on the back side of the block, so you will have to cut and extend the two wire plug to reach the thermostat housing. But this is fairly easy. The gray plug harness that comes with the OBD-1 B16A cannot be used, but can easily be sold for $100-$125 as they are in high demand. But usually most JDM harnesses are cut instead of unplugged (don’t ask me why they do this….speed I guess). So it may be useless.
· Motor Mounts-Use your existing B18A1 motor mounts and you’ll have no problems. The Civic motor mounts are different and cannot be used.
· Distributor-You can use your B18A distributor but the leg towards the front of the car has to be cut off to allow clearance for the VTEC purge assembly. You will only have two bolts holding your distributor, but that is adequate. You can do this or your other choice is to buy a non-OBD VTEC distributor (PR3). You can find them on the net for as little as $100, but most are priced at about $150. The OBD-1 Distributor that came with the motor cannot be used but can be sold for $150-$200.
· Injectors-You will need to use your existing non-OBD B18A1 injectors. The OBD-1 injectors have a different plug on them made for the gray OBD-1 harness. Other than that, the injectors are identical.
· ECU-This motor will come with an OBD-1 VTEC ECU (P30). You cannot use this ECU with your harness that is inside your vehicle (non-OBD). So sell it and buy a non-OBD VTEC ECU (PR3, PWO). Either one of those ECU’s will run the OBD-1 B16A perfectly with your B18A1 harness.

 

the car been running off and on with the pr3-j00 ecu in it but the motor is the first gen b16a so i don't understand why would they send me a obd 1 ecu for a obd 0