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Wastegate on Turbine housing - Spool effect ?

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Hi - since building the right manifold with a perfect designen wastegate placement might be difficult when space is limited.

So I did laser weld my wastegate directly to the turbine housing to overcome boost creep.

Within my next project I would actually do the same but wondering if someone ever did test the downside of it? Speaking about efficiency loss because of increased turbulences within turbine housing - esp when it comes to twin scroll.

Any thoughts appreciated

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