So I was driving to big sur with a whining coming from the turbo area that got very bad further in and i lost turbo. I read it to be the issue of a leaking manifold and the whistle being the gasket. I saw exhaust residue near the bottom of the manifold so assumed that was it and why the tubo lost power. I just replaced the manifold and gasket. The manifold was slightly warped and had two bits of raised casting that looked like they raised somehow. Anywho, it was surfaced and a new gasket installed and now I fell like the turbo is getting a little power but that noise is still there and the van definetley still lacks oomph! Im going to have a friend hit the gas while i try to get a better listen to see if it really is the turbo. Would anyone know if doing a cartridge change on a turbo is worse than ust buying a non garrett turbo? Also maybe what else the noise could be? I was also getting massive amounts of smoke.