GReddy Profec Electronic boost controller

Ultra slim Control Unit with large OLED Display
In stock
$417.00 $336.29
GReddy is proud to introduce the next evolution in the GReddy PRofec line of electronic boost controllers. The new PRofec is compact, powerful and easy to use. The large OLED Display, with a simple two-button / rotary-dial control, make for intuitive operation. An ultra slim controller can display in digital, bar-graph, or graphical modes and can be rotated 180 degrees for installation with the included adjustable mount or flush mounted. By separating the display and control unit in the driver’s compartment, from the engine compartment-mounted, waterproof, sensor unit, it makes installation straightforward. Only one thin harness is required to be routed through the firewall. The combination of the new 300kPa (43.5psi) integrated pressure sensor, the more compact solenoid valve and faster CPU processor, provide quicker response and the most stable boost curves yet. The PRofec also maintains popular features like, Lo, Hi, Scramble boost presets, last-boost display, peak-hold recall, warning alert and safety limiter.
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GReddy Profec - Electronic Boost Controller

Compact, Powerful & Easy to Use

GReddy is proud to introduce the next evolution in the GReddy PRofec line of electronic boost controllers. Unique compact OLED Display and improved CPU processor improve performance and stability. And the new layout improves usability.



  • USB Port - improved communications & better real-time data and monitoring
  • Toggle Switch - switch between maps Serial port - monitor and data logging
  • Switch port - Data log & Ign. Cut activation
  • Option 1 & 2 - Connectors for sensors
  • Warning Setting
  • A/T Shift Compensation
  • Channel Change
  • Rev limiter cut
  • Acceleration injection Map
  • Individual cylinder fuel & ignition adjustment maps
  • Speed correction map
  • Coolant temperature correction map
  • Air intake temperature map
  • A/F target value map
  • Ignition adjustment map
  • Acceleration ignition map
  • Nissan Valve control map
  • Analog output map
  • Auxilary output map
  • Idle stabilization map Additional Features
  • RPM signal recognition
  • Fouled plug feature
  • Data logging
  • Text file save feature
  • Knock monitor (future feature)
  • Ignition timing display (future feature) Ultimate complete harness kit & supplement harness kit also available


  • Controller
  • Sensor Unit
  • Solenoid
  • Bracket

Profec Programing Basics

The Profec is programed with the same 3, easy adjustments as the previous PRofec B-spec2 (SET, GAIN, & START), but refines the programing to one simplified screen, for simple intuitive control. (While the PEAK recall in the programing screen helps the programer see what boost level was.)

SET % = Controls the target boost level. As simple as a manual boost controller. As you increase this percentage from 0-100% it increase boost over factory wastegate spring boost level.

GAIN % = Controls the Wastegate response (stability) at higher RPMs. So if the boost level tends to drop as the RPM rises, you can set the GAIN % to a higher positive value (0 to 100) And if you want the boost to drop at higher RPMs you can set the GAIN % to a more negative valve (0 to -99.

START (Boost) = [CONTROL] Is a boost pressure value that determines Boost Response (or when the boost controller starts to open and close the wastegate.) This is generally set 3-6psi (1-2kPa) below the desired boost level. (if the boost "Spikes" then regains control, it is likely the START valve is too high and should be set lower.) Under the START [NORMAL] setting (if used) the wastegate is allowed to open gradually to the START boost value (more similarly to a manual boost controller. This maybe ideal for more complex sequnetial turbo set-ups.)

Profec Electronic boost controllerEasy to use controls
Profec Electronic

Easy to use controls

Simple rotary-dial and dual push-button layout was designed and developed with an emphasis on simple operation.

Profec Electronic

Dimentions (89mm X 36.5mm)

Intuitive Dial Operation

Unique to this latest generation PRofec is a larger ergonomic rotary-dial control. Along with a new compace display unit size, the controller can be easily mounted within reach of the operator. This all together creates an intuitive boost controlling experiance.

Profec Electronic
Profec Electronic

New Compact Solenoid and Improved CPU Control

The PRofec uses a new more compact 3-port boost solenoid, controlled by a faster CPU. The result is a quicker responding system, that provides our most stable boost curves yet.

Profec Electronic

Excellent Visibility with the OLED Display

OLED (Organic Light-Emitting Diode) display offers excellent visibility at a wider range of angles. It is also much brighter then standard LCD screens, allowing the display to be more compact, yet still effective.

PRofec mount

Slim Design Offers Multipule Mounting Options (89mm X 36.5mm - 11mm thick flat-screen)

Surface mounting, as well as, the rotating of the display by 180 degrees, opens up numerous mounting options. An adjustable mounting bracket is also included.

Greddy Profec Dimensions (mm)

Greddy Profec Dimensions
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