desired boost level with a few simple twists of the body. Applicable to most all
Easily adjusted by hand, the “twist-to-adjust” body simply shortens or lengthens to alter
the spring pressure on the metering ball. This simple design only uses 5 parts and
doesn't require any special tools to make adjustments. At the heart of the PERRIN
Manual Boost Controller is the Ball and Spring. The spring holds pressure against the
metering ball, closing off boost pressure from reaching the turbochargers waste gate.
Once the pressure builds to your desired setting the spring begins to collapse, the
metering ball lifts and lets pressure through to the waste gate actuator limiting boost
levels. The PERRIN Manual Boost Controller incorporates a custom wound progressive
rate spring and a ceramic metering ball for it's lighter weight and ultra smooth surface
insuring the fastest response possible.
The PERRIN Manual Boost Controller has a precision machined bleed hole that reduces
the falling type boost curve that plague other boost controllers. This "tuned" bleed hole
compensates for the added volume of air flow as RPM's increase and ensures a fast
response as you approach your peak boost setting. This is a major advantage in the
PERRIN design and allows their boost controller to be more consistent and perform
better in all applications.