I have a question.
Has anyone using the stock WG that came with the S280 ever experience issues with all of a sudden getting Less Boost? One of the guys in my local group is having boost issues, found no boost leaks and yet the Waste Gate preload which was set a little higher than stock by who installed it has dropped off by about 4psi. I'm wondering if maybe the extra turns might have damaged the WG?
The ones I've installed have had no issue with boost but they did have the Turbosmart WG actuator which is about 14psi.