Hello Happy New Year 2014 still running Dohc Vtec engine :-). As I'm a noob for JDM ECU. Currently I'm running 37820-p30-020 ECU Re chipped :-) as I checked. Since 37820-p30-000 and 37820-p30-010 almost same part number just last 3 digit is different 000,010,020. I assumed is a batch number. I wonder 37820-p30-000 and 37820-p30-010 any main different to 37820-p30-020? Such as the Chip socket soldered from factory? Thanks

 

It's not a batch number. It's a revision. Either the manufacturer changed or the program changed or both. The P28 for example went from being made by Denshigiken in '92 - '93 to IPT in '94 - '95, the boards differ a bit, but the ECUs is functionally equivalent.