Genuine MAC USA we also have proper brackets etc for these.  Do not use plastic brackets that shroud/insulate/overheat the coil.  
We include mounting screws, but our brackets are the proper way to go.

MAC 4 port boost controller precisely directs pressure to the top and bottom of your waste gate diaphragm. It allows much lower waste gate spring pressure for better low gear boost control and perfect high gear, high boost control.

Includes: 
(1) 46A-AA1-JDBA-1BA 4 port Mac valve

Specifications: 

PWM Compatibility: