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This is what the downpipe will be replacing. This catalytic converter was no longer operating at peak efficiency and was acting as a bottleneck to exhaust flow.
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A little convincing may be required to remove turbo fasteners and split the union. Soak all exhaust fasteners with penetrating oil first to loosen rust and prevent broken bolts or stripped nuts.
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If removal of the turbo is required, always use line wrenches on oil and water fittings to prevent stripped bolts. Penetrating oil is your friend.
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Be careful not to bend or crimp any turbo oil lines when removing the turbo. Do not allow debris to enter the compressor wheel and housing. Shown here is the cold side of the turbo, or the compressor wheel.
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Test-fit the downpipe before reassembling the exhaust.
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Don't forget any exhaust gaskets on reassembly.
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Tighten all fasteners to specified torque. Use of high-temperature anti-seize compound can help prevent nuts and bolts from seizing up.
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Bolt up the other side of the downpipe to the exhaust. Make certain there is clearance between the downpipe and vehicle body and that heat shielding is in place.
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