HiI would appreciate some help identifying this obd1 ecu. There are no obvious stickers on the casing. The board is an 11fo and the main processor is stamped with 313.I've been googling for an hour without success.Thanks​​​​​​​​​​​​​​​​​​​​​

 

it's strange, when blundar made this... https://mycomputerninja.com/~jon/www...der-DIP64.html that's the MCU that's connected to the reader, but the file didn't make it to https://mycomputerninja.com/~jon/www...tionCodes.html

is there a reason why you care what's in the MCU? with J1 in place it's reading the external chip anyway. So this becomes a P28 clone.

 

Thanks for replying. Yes, I did manage to find that list and as you say its not on it.
The reason I ask, is it was sold to me as a p28 and I wanted to know what I had received.
I'm converting a d16a9 from obd0 (PP5 EO1) to obd1 with hondata and wanted to be sure it would work.
I'm new to honda ecu's and learning all the time.

 

not a technical p28 looks like p06 converted to vtec. its all the same though basically.

 

It's not technically a P28, but it has been modified to operate like a P28 via adding hardware. So it should work fine.
Never stop being open to learning new things.