Compact OLED Display

One of the most noticeable upgrades on the latest PRofec is its display.

Features

• Large OLED screen
• Ultra-slim controller design
• High visibility
• Multiple display modes

Unlike older boost controllers with tiny screens and confusing menus, the PRofec is designed for easy viewing and operation.

Multiple Display Modes

Drivers can choose between:

Numeric Mode

Displays precise boost pressure values.

Bar Graph Mode

Provides a quick visual representation of boost levels.

Graphical Mode

Allows users to monitor boost behavior over time.

This flexibility lets drivers customize the display based on preference.

Faster Processor for Improved Response

GReddy upgraded the PRofec with:

New CPU Processor

Benefits include:

• Faster boost corrections
• Improved response times
• Smoother boost curves
• Better stability

Modern turbo systems require rapid adjustments, especially in high-horsepower applications.

300kPa Integrated Pressure Sensor

Maximum Sensor Capacity

• 300kPa
• 43.5 PSI

This allows the PRofec to support:

• Street builds
• Track cars
• Drag racing applications
• High-boost turbo setups

Many enthusiasts will never approach 43 PSI, but having additional overhead improves versatility.

Separated Waterproof Sensor Unit

The system utilizes a two-piece design.

Interior Components

• Display
• Controls

Engine Bay Components

• Sensor unit
• Pressure sensor
• Solenoid valve

Benefits include:

• Easier installation
• Cleaner wiring
• Improved reliability
• Reduced cabin clutter

Only a single harness needs to pass through the firewall.

Supports Internal and External Wastegates

The PRofec is compatible with:

Internal Wastegates

Common on factory turbo systems.

External Wastegates

Found on many high-performance aftermarket setups.

This broad compatibility makes it suitable for nearly any turbocharged build.

Dual Boost Settings Plus Scramble Mode

One of the most popular PRofec features is its ability to store multiple boost settings.

LO Mode

Lower boost for daily driving.

HI Mode

Higher boost for maximum performance.

Scramble Boost

Temporary boost increase at the push of a button.

This feature is especially useful for:

• Roll racing
• Drag racing
• Passing situations
• Track use

Peak Hold and Last Boost Functions

The controller can display:

Last Boost

Shows the most recent boost reading.

Peak Hold

Records maximum boost pressure achieved.

These features make tuning and troubleshooting significantly easier.

Built-In Safety Features

Turbocharged engines can be expensive to repair.

The PRofec helps protect your investment with:

Audible Warnings

Alerts the driver when boost exceeds programmed limits.

Visual Warnings

OLED display warnings for overboost situations.

Safety Limiter

Automatically limits boost when preset thresholds are exceeded.

These safeguards can help prevent catastrophic engine damage.

Easy User Interface

The PRofec uses:

Controls

• Two buttons
• Rotary dial

Benefits include:

• Simple navigation
• Quick adjustments
• Intuitive programming
• Reduced learning curve

Even users new to electronic boost controllers can quickly learn the system.

Ideal Vehicle Applications

Honda

• Civic Turbo
• Integra Turbo
• K-Series Turbo Builds

Nissan

• 240SX
• 350Z
• 370Z
• Skyline GT-R

Toyota

• Supra
• GR Corolla
• GR86 Turbo Builds

Subaru

• WRX
• STI

Mitsubishi

• Evo VIII
• Evo IX
• Evo X

Pros and Cons

Pros

• Large OLED display
• 43.5 PSI pressure sensor
• Fast processor
• Waterproof sensor unit
• Supports internal and external wastegates
• Multiple boost presets
• Scramble boost mode
• Peak hold and boost recall
• Built-in safety protections

Cons

• Requires proper tuning knowledge
• More expensive than manual boost controllers
• Installation requires vacuum routing and wiring
• Not a plug-and-play power adder

Frequently Asked Questions

Is an electronic boost controller better than a manual controller?

For most performance applications, yes. Electronic controllers offer greater precision, flexibility, and safety.

Can the PRofec control external wastegates?

Yes. It supports both internal and external wastegate configurations.

What is scramble boost?

A temporary boost increase that can be activated when additional power is needed.

Can the PRofec prevent overboost?

It includes programmable warning and safety limiter functions designed to help protect the engine.

Final Thoughts

The GReddy PRofec Electronic Boost Controller remains one of the best boost management systems available for turbocharged enthusiasts. With its large OLED display, advanced boost control logic, waterproof sensor unit, 43.5 PSI pressure capability, and multiple safety features, it offers the precision and reliability serious turbo builds demand.

Because making boost is easy. Making the right amount of boost without scattering engine parts across three lanes of freeway traffic is where the PRofec earns its reputation.

GReddy PRofec Electronic Boost Controller