HI v2.0 "obd1 vs obs2 engines" Chance was here

Hi,
There is no difference in the engines of OD1 and OD2, just Only the difference in the E C U (Engine Control Unit) programming.
Am i right??????
There is no difference in the engines of OD1 and OD2, just Only the difference in the E C U (Engine Control Unit) programming.
Am i right??????