MAC 4-Port Boost Control Solenoid Kit

A high-quality genuine MAC 4-port boost control solenoid designed for precise electronic boost control on turbocharged engines with a dual-port external wastegate.

Unlike a conventional 3-port solenoid, the 4-port MAC valve controls pressure on both sides of the wastegate diaphragm. This provides greater control authority, allowing high boost levels to be achieved with a relatively soft wastegate spring while keeping the wastegate firmly closed during spool-up.

Ideal for high-boost and motorsport applications requiring a wide adjustment range and advanced features such as boost-by-gear, boost-by-speed and launch control. Compatible with aftermarket engine-management systems including the ECUMaster EMU Black and EMU Classic.

A compatible dual-port external wastegate and correct ECU calibration are required. Not intended for standard single-port internal wastegate actuators.