2003-2006 Mitsubishi Evo 8/9 MAPerformance Comp-Gate40 External Wastegate O2 Housing
We recommend running this external wastegate in conjunction with your factory internal wastegate for the best of both worlds in regards to spool characteristics, boost control and boost capabilities.
Simply run a vacuum line to the external wastegate from your boost controller as normal combined with an additional vacuum line directly from a boost source to the internal wastegate actuator and you're all set, no additional modification necessary!
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