For starters you can add vtec to any obd1 ecu (you have to solder the ecu), secondly Hondata s300 isn't an ecu...its a fuel management program. Secondly the obd has nothing to do with the motor its self, it has to do with the wiring, injectors, ecu and distributor. If you have an 00 Integra like your thing on the left states then you will need to convert it to obd1 in order to tune it, there are thousands of write-ups on line on how to do it.