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Twin Turbo Compound Boost 2003 Mustang Cobra Boost Knob

A boost knob and two Turbonetics Evolution waste-gates are used to control the boost. Turning it up too much can cause serious catastrophic failure.
Compound Boost 2003 Mustang Cobra Twin-Turbo - The Manhattan Project

A boost knob and two Turbonetics Evolution waste-gates are used to control the boost. Turning it up too much can cause serious catastrophic failure.  View Related Article