OK so had a look around and I see what your talking about now. Located the ECU on my bike and found out it is a 'Delphi Sec'.

From all the articles I could find you are right. EFI bikes need ECU remap or an ECU Controller attached. ECU modules on their own can make minor adjustments to fuel usage etc. Some can adjust a little easier on their own than others to small changes. Even drilling holes on some occasions can be to much for the ECU.

From what I read anything from debaffle to new pipes will require ECU remap or Controller attached.

Thanks for the great advice. Saved me from a possible costly mistake.