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Blow off or BOV is the valve used for turbo or supercharger engines. It is used to release the excess pressure created between the throttle and the turbine when turbo is rotating while shifting gears which results that pressure remauns in the pipeline due to closed throttle valve. By using BOV valve, this excess compressed air is forcibly removed from the pipeline to produce characteristic sound for BOV and avoid so-called turbo lag.
We usually distinguish valves into two categories, Open and Closed.
There are also BOV valves for Diesel engines, which only works as sound effect while changing gears.
Boost controller allow a simple increase turbo pressure. Suitable for all turbocharged and supercharged engines (and diesel). Controllers use the vacuum coming from the compressor part fo the turbo or compressor leading to the wastegate.
There are two types of turbo pressure controllers. Mechanical and Electronic.
Mechanical (or manual) controllers offer a wide range of boost pressure settings. They are simply installed (in the cab or in the engine compartment), they are simple to operate and require only minimal maintenance.
Electronic turbo pressure controllers are much more sophisticated devices that offer many boost settings according to preset values by user. Pressure changes can be made by gear shift, time, speed or by manual switch.
Intercooler cools the compressed air coming from the turbocharger. The cooler air is thicker, so for the same volume has a higher oxygen content. Such cooled air have a good affect to the combustion process, which among other benefits also brings higher performance.
There are several types of input and output for intercoolers:
Intercooler is most often placed on the front of the vehicle. For this location we call it FMIC (Front Mounted Intercooler). Other options are SMIC (Side Mounted Intercooler) or TMIC (Top Mounted Intercooler).
Benefits of using a bigger intercooler:
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