Hondata

Will the chip that was made for my P28 hondata ECU work in a P72 ECU?
reason im asking is the P28 went bad and I wanna upgrade to the P72 I think its a much better choice if I have to buy a new ECU.
also can I just solder the OBD2 adapter from the P28 on to the P72 and not have to use a adapter harness?

I do not recommend trying to remove a soldered in adapter harness, as you will probably destroy both ecus. Your chip will also have to be reburned to enable the knock board.