Makes no difference if it's "standard connection lag" (whatever that is supposed to mean...your lag is special I guess). Running pimpmywii will not help at all with any online or connection issues.
Have you heard of coincidence? Changing cIOS will not help the lag issue. I have tested this thoroughly.
The only reason it helped with the 002 error is because it updated or installed IOS57 which can be achieved many ways.