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Wastegate location

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Would you consider this a good position for a wastegate to operate correctly? In my opinion it wont have good flow. Car is also overboosting

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Yea, that's definitely less than ideal. It's challenging though as you're kind of limited on your options. You may get away with that location with a slightly larger wastegate.

Is that wastegate bleeding off only 1 runner? You might do better with a modern internal wastegate (example: Borg Warner EFR turbos) than external gate bleeding off 1 runner.

Hi sorry for replying so late. We tried a 5psi spring to see what happens and it reached 10psi. Customer in now replacing exhaust manifold

Proper waste gate integration is something that is misunderstood even by many of the manifold fabricators. Definitely shop around to see what is available and try and get a nice smooth integration where the exhaust flow can easily exit through the gate.

Will do Andre. Will try and post it here before buying