GReddy Profec B Spec 2 Boost Controller

GReddy Profec B Spec II

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GReddy Profec B Spec 2:

The Greddy Profec B Spec 2 sets the bar for electronic boost controllers. With it’s easy to use interface and rock-solid boost control it has been the go-to unit for many shops in the industry. Need more boost? A simple click of a button and bam you’ve got it. Monitor your boost pressure in real time with the color OLED display. It’s designed to be used with either a standard pneumatic actuator or external wastegates, so no matter what you’re using to control boost levels you are covered.

The compact solenoid valve and fast ECU processer provides immediate response and the most stable boost curves yet.

Installation is a piece of cake and requires no special tools. You can easily have it installed and fully set up in an afternoon. With the control unit and sensor being separate units you have unlimited options when it comes to placing it inside your vehicle. Simply route the wiring harness through your firewall and mount the control unit in your cockpit. The ability to fine tune your pressure level has never been easier. 

There are 2 preset settings that can be selected by a single switch. This makes getting that extra power you need as easy as possible. Hit your high boost setting and you are ready to race!

The response and the consistency of the boost can be adjusted by using the GAIN, START BOOST setting. A built in warning feature will alert the driver when the boost exceeds the set boost pressure with an alarm and a message in the display. When the warning feature is activated, the LIMITER feature can lower the boost to a safe pressure. PEAK boost feature will allow the user to check the highest boost recorded.


  • Color OLED Display
  • Easy To USe Control Screen and Dial control
  • Start Boost – inital boost response adjustment
  • Warning point, warning limiter, peak-hold/Last boost
  • Built in Boost gauge (kPa or PSI) 3 display types – Numeric, Bar Graph, & Map Graph
  • 2 preset setting, LO & HI, with 3rd timed Scramble boost setting
  • Set % – to increase boost (higer number, higher the boost over base boost level)
  • Gain % – wastegate response adjustment
  • Revised compact boost solenoid
  • Compatiable with both actuator style and external wastegate style turbo systems


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