Thats a great idea actually.
Hondata seems to only have the upper hand because its a lot cheaper in the USA.

Quick question, if i find a used Haltech Platinum PRO ECU, does it matter which car its for?

Is every connector different?
And even if they are, can i use the DC5 earlier one and just make sure i upload the correct basemap before starting the car?

I'd like to buy second hand if i could.