In stock and ready to send – UK stock - Fast delivery

R-Spec Performance is an authorised MAC distributor and only sell genuine UK "automotive spec" MAC valves. Unfortunately as with most branded products Ebay is flooded with counterfeit Chinese copies of these valves that have no warranty or quality guarantee, so beware of copies or non-automotive grade solenoids.

genuine MAC 4 port boost control Solenoid: 4 port solenoids are generally used for perfecting boost control on aftermarket external wastegate applications. This superior boost control solenoid only has a 2 wire installation, the port connections are also detailed making overall installation very easy. These are the perfectionist tuners choice when using standard or aftermarket ECU's to control boost on external wastegate set ups etc as they are perfect for achieving higher boost thresholds on applications using softer wastegate springs, these 4 port solenoids add another dimension to aftermarket boost control and allow much finer and perfected boost control.

A 4 port boost control solenoid valve is designed for use in applications which target a clearly defined boost curve. Capable of improved boost response and in some cases with a soft wastegate spring - quicker spool. The 4 port design works equally well in low boost applications as high boost. This differs from a traditional 3 port valve because it precisely directs pressure to the open and close ports of your waste-gate diaphragm. This allows much lower waste-gate spring pressure for better low gear boost control and perfect high gear, high boost control.

This is the same solenoid used by many aftermarket ECU manufacturers at a fraction of the price. This is a genuine part supplied by MAC that is full automotive specification, however many solenoids on Ebay are just "general use" grade solenoids that are not designed for automotive use. R-Spec Performance is the largest MAC automotive solenoid stockist within the UK so you can buy with 100% confidence.

Please see our other items for specific CNC mounting brackets

Please note:

An ECU remap is required to gain the full benefits of an upgraded boost control solenoid.

The MAC (Automotive Grade) 4 port valve is a true solenoid. It is rated to hold boost pressures far in excess of levels that any petrol turbocharged engine is ever likely to see. This product is especially useful for tuners when increasing factory boost levels beyond standard.

R-Spec Performance Products Ltd is probably the largest  gauge supplier in the UK and we hold everything in stock ready for immediate dispatch. We have 1000's of gauges & pods etc in stock so please check our other Ebay items or just contact us with your requirement so that we can list it for you.