What kind of ECU is this?

With my motor swap, they sent me an ECU. It says PR3 on it but it doesn’t plug up to my 91 Integra RS harness. The harness connection on the PR3 are gray, not black and green like my PR4. If anyone has a clue what kind of ECU this is, it would help. Also if anyone wants to trade this for a regular PR3 or buy this for me, let me know asap.

The number on the side of the ECU says:

37820-PR3-J51
455-100127
ABG

Most likely an OBD1 PR3 rather than a non-OBD PR3.

Pretty rare ecu you got there.

how much you want for it? if it really is a obd1…i will buy if price is right…

Price of ECU

If you have one of the non-OBD PR3, I’ll trade you straight up for it. You pay for your shipping and I’ll pay for mine. I’ve been getting the run around from the company that I bought it from and it doesn’t seem like I’m going to get the right one for a while. Otherwise, I’ll let it go for whatever it costs to buy another non-obd PR3.

E-mail me at vulocity_99_2000@yahoo.com if you want pictures of it.

And…what about the ECU?

And…what’s so special about the thing? As far as I’m concerned, it’s a big square paper weight that won’t get my car humming.