ok i got a few gsr ecu's and wanting to sell one. and dude asked me if its usdm or jdm. and i have no clue how to tell. it has numbers 37820-p72-a05 and below that is 1290-108561 and is made by keihin corp. can anybody help me with this? cause i am totally lost on this one. its a 2000 gsr ecu btw

 

i believe its a USDM bcuz of the A05 at the end...i needed a gsr ecu awhile back that had to be 98 USDM which was p72-A04

 

thats what i thought bc i think there used to be an immobilizer in it. idk i got it from some douche who lied about all kinds of things i mean how do u take the immobilizer out of a obd2b ecu. so with that said thanks and i do believe ur right.

 

There is a guy here on HT that reflashes the EPROM chip to bypass the immobilizer on the obd2b ecu