.
Yes
If you have to port the WG in stock turbo, even that shows that there is some kind of problem in hot side gas flow.
Compressor is too efficient.
There are no room for bigger compressor until something positive happens in the hot side.
The "big turbo tuners" just donīt care.
There are even two possibilities to turbine and the other one can be find quite easily in fact, not more than hour or two ...
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