sergei wrote:and the way they use or implies it either has to be same capacity or power.. So in other words if it is 1600cc it does not matter what power does it make.
You've misinterpreted that Sergei. It just means the engine has to be either 1600cc or less and it must also make the same power or less to not need a cert.
You WILL need a cert if you swap a B/T into a car that had a red or bluetop engine previously... same if you put bigger cams in and make 20% more power (not that anyone could tell).