Wastegate

Part of Turbo 1 (cyl 1–3) · about $380 to replace

What it is

Electrically actuated flap in the turbine housing.

What it does

Bypasses exhaust around the turbine to cap boost.

How it fails

Rattle at idle is a worn flap pivot; the actuator is recalibrated with a scan tool.

Material	Stainless flap, electric actuator
Spec	Actuator travel 12 mm
	0–100 % in 120 ms

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