[Halon]

Yes. You unhook the WG flapper and force the flapper so its just open, that way you forced it to bypass as much air as it can all the time. So your boost should be as low as it physically can be. Then you see if its still over boosting. If it is, then you know the issue is the wastegate just physically cant do any better and is your limiting factor. if the over boosting goes away, then you know the wg itself is not the issue and for some reason its just not getting told to open because you just proved that if its open it was nt overboosting, which is then why you try another boost source because perhaps there is some unforseen issue with the spot you are using now.