Prevents the rise in second exhaust pressure of the turbine and reduces the burden to depend on the turbine main body and performs supercharging immediately. Largely decreasing the turning current of air to become the resistance of the exhaust by letting the main pipe (60 Φ) spread just after the turbine exit, and will bring out the response and power of the turbine which originally has. Heat resistant steel used to the flange part. For the pipe part, heat resistance, noncorrosive, good 60 Φ stainless steel (SU304) is used. ■ Exclusive for twin turbo

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