Turbosmart Kompact Dual Port VR58 is a direct-fit recirculating blow-off valve for the BMW B58 Gen 3 turbocharged inline-six. It mounts in the factory location and vents partly to atmosphere for an audible release while recirculating the rest to keep the tune happy on a closed intake. Patented piston design holds boost and reacts instantly to throttle changes.
| Type | Dual Port recirculating blow-off valve (Kompact VR58) |
| Fitment | BMW B58 Gen 3 - direct replacement |
| Operation | Dual port - vents to atmosphere and recirculates |
| Mounting | Factory location - bolt-on |
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