Each time this comes up I try and figure out how to tell if the ECU is a restricted type but the information is conflicting. If you try and order a new ECU you have to supply a copy of the V5.
https://www.fowlersparts.co.uk/parts...abs/electrical
I would take the numbers off the ECU and contact Suzuki GB.
I did find this:
"The laws surrounding A2 restrictions are often misunderstood.
There is no legal requirement to have a certificate or documentation to say that the bike has been restricted."
(from here:
https://begin-motorcycling.co.uk/a2-...indepth-guide/)
This seems stupid imho.