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What are N52 DISA valves?
The 3 stage intake manifold (3sim) or "330i conversion" is a popular OEM upgrade amongst N52 enthusiasts worldwide. The manifold utilizes small electric actuating valves called "DISA" valves to close off sections of the manifold to chang
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Couldn't be happier or more impressed. Great job on R&D and production. Thanks N52parts. More business coming your way.