The universal blow-off valve features a much thicker and more robust diaphragm that, in addition to producing a fantastic "psssss" sound, protects the turbo. The valve is well-designed and can be applied to most turbocharged vehicles. The set contains:
The blow-off valve is a turbo pressure/boost release valve that discharges pressure when the throttle is closed, preventing damage to the impeller bearings and extending the turbo's lifespan. It reduces turbo lag during acceleration.
To determine the correct spring, it is necessary to measure the engine vacuum at idle when the engine is warm and has reached its operating temperature.
The valve comes pre-installed with a configuration spring.
Typically, the 0.35-0.50 BAR spring is the most common and popular choice.
During valve installation, only use silicone hoses of the correct size and pressure/vacuum rating for your application. Ensure that all hydraulic hoses are secured with appropriate clamps and/or that the correct fittings are used. The valve must be mounted at least 100 mm away from any high heat source or be adequately shielded.
Identify a suitable location along the intercooler/intake piping for the valve: it should be positioned between the turbo outlet and the throttle body, ideally between the throttle body and the intercooler.
In any case, Simoni Racing recommends that installation and adjustment be carried out by qualified personnel.