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Manual Boost Controller


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Was: $115.00
Sale: $99.00
Save: 14%
Save: $16.00


Boost control made simple.

The PERRIN Manual Boost Controller is a simple inline device that allows you to set your desired boost level with a few simple twists of the body.
Applicable to most turbocharged vehicles.

Body Design

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.

Ball & Spring

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.

Bleed Hole

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 our boost controller to be more consistent and perform better in all applications.

Boost Control Systems Explained

This 3 part blog series written by Jeff Perrin explains how boost is regulated in a turbocharged vehicle, how aftermarket boost controllers work and when to step up to the PERRIN EBCS Pro solenoid. Included are tech notes and dyno graphs illustrating the proper use and advanced layouts for different boost control systems.
» Learn More

5 Year Warranty

PERRIN Performance warrants to the original purchaser that all PERRIN products will be free from defects in material and workmanship within a sixty (60) month period from the date of purchase. *Some exclusions apply
» Read Full Warranty

Off Road Use Only

This product is legal in California only for racing vehicles which may never be used upon a highway. Check your local and federal laws prior to installation!
» Learn More

Installation Gallery


Warranty Details

This product features a 5 year warranty Read Full Warranty

Tech Department




Material 6061-T6 Aluminum Hex Stock
Finish Black and Clear Anodizing
Ball Ceramic
Spring Custom Wound Heat Treated Stainless Steel
Adjustment Threaded Body w/Indicator Marks
Warranty 5 Years

In The Box

In The Box

(1) PERRIN Manual Boost Controller
(6') Vacuum Hose

Dyno Charts

Dyno Charts

Manual Boost Controller Test

Dyno Chart

In the above dyno graph you can see how the PERRIN Manual Boost Controller builds boost faster and holds boost longer than the factory boost control system. Sometimes OEM boost control systems have wavy boost curves which can be felt during driving. You can see on this EVO X, the Manual Boost Controller has a much smoother curve.

Compatibility Notes


Fits Most Turbocharged Vehicles Yes


Shipping Information

  • Item Requires Shipping
  • 1.0 lbs.
  • W3.0000” x H7.0000” x L8.0000”
  • This item ships in its own box.