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M133 TurboSmart Kompact Mechanical BOV Conversion


Full Mechanical BOV conversion

Please note that this is NOT comparable to the gimmick BOV adaptors sold by some.

This unit completely replaces the leak-prone factory ECU controlled valves (or blank plate on older models) with a purely mechanical valve that is only controlled by boost & manifold pressure. An essential upgrade for up to stage 2 tunes, where the factory valves can no longer support higher boost levels.


NOTE: The Kompact valve is limited in spring pressure and flow volume. For cars higher than "stage 2" (with upgraded turbos) we suggest our RPA conversion.