Ready to blow off a little steam? Get Forge under your hood.

Stock diverter valves just can't handle significant performance upgrades. Forge machined alloy diverter valves are engineered with increased manifold boost pressure in mind, giving you peace of mind when adding performance upgrades.

The BMW E9X diverter valve is fully tunable for both boost-holding capacity and response using Forge's proprietary interchangeable springs and shims.

Featuring an aluminum housing, the faster-responding unit also works and plays well with engine management systems.



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