not sure on that.
but if not mistaken ek9 2000 using obd2b n the ecu cannot fit to the obd2a socket like ek4 one.
the ecu size oso smaller than normal b-series ecu size.
One of the trickiest moves for a driver to execute on the roads is when a multiple lane road gradually drops into a single lane. While yes, it might not sound that hard to do in a light traffic condition, it goes up...