The GFB G-Force III Electronic Boost Controller (MPN 3005) provides precision boost management and advanced engine protection in a single compact unit. This third-generation controller allows you to monitor and display your engine's air/fuel ratio (AFR) or Lambda by connecting the analogue output of most wideband O2 controllers to its auxiliary input. This eliminates the need for a separate AFR gauge while providing a critical safety layer for high-performance forced induction systems.

Built with engine longevity in mind, the G-Force III features a lean-mixture safeguard that automatically drops boost to the minimum setting and flashes the display if a lean condition is detected. Users can configure up to six distinct boost presets for different driving scenarios and activate a dedicated scramble feature for temporary peak performance or engine protection.

• Integrated AFR Monitoring: Displays Air/Fuel Ratio or Lambda when connected to an external wideband controller (sold separately).
• Advanced Safety: Visual warnings and automatic boost reduction to the lowest setting if the engine runs lean under load.
• Six Boost Presets: Quickly toggle between six user-defined boost levels on the fly for street or track use.
• Scramble Feature: Remotely trigger a boost offset for overtaking, launching, or towing.
• Customizable Interface: Selectable display colors to match your vehicle's interior dashboard lighting.
• Precise Solenoid Control: Replaces factory boost control for faster spool-up and stable peak boost pressure.

Fits select 1983-2014 Chrysler, Dodge, Eagle, Mazda, Mitsubishi, Nissan, Plymouth, Subaru, and Toyota turbocharged vehicles.

The GFB Atomic (MPN 3001) is engineered for drivers seeking a reliable, stable boost curve and a faster rise rate without the maintenance headaches of generic valves. Unlike many budget manual controllers that rely on a ball-and-spring system—which can suffer from boost spikes and inconsistency—the Atomic uses a precision-machined design to ensure repeatable performance and immediate response. This controller is a cost-effective solution for fine-tuning wastegate pressure and maximizing power delivery.

• Precision Control: Delivers a stable boost curve with a quick rise rate for improved throttle response.
• Reliable Design: Avoids the common pitfalls of ball-and-spring mechanisms for superior consistency.
• Low Maintenance: Built for 100% reliability with zero ongoing maintenance required.
• Robust Construction: Machined to exacting tolerances for longevity in harsh engine bay environments.
• Manufacturer Part Number: 3001

Fits 2013-2020 Subaru BRZ, Scion FR-S, and Toyota 86 models.

The GFB Lightweight Aluminum Water Pump Pulley (MPN 2223) is engineered to sharpen throttle response and improve acceleration by significantly reducing parasitic drag at the engine. By replacing the heavy factory steel pulley with a precision-machined alternative, this upgrade allows the engine to rev more freely without compromising the reliability of your driven accessories.

• Precision CNC-machined from a single billet of 6061-T6 aluminum
• Reduces rotating inertia by up to 85% compared to the original equipment
• Improves throttle response and provides a more willing engine feel
• Direct bolt-on installation with no tuning or supporting modifications required
• Engineered to maintain factory accessory performance with no risk of engine damage
• Manufacturer Part Number: 2223

Fits select 2013-2020 Subaru BRZ, Toyota 86, and Scion FR-S models.

The GFB Lightweight Alternator Pulley (MPN 2221) is engineered to sharpen throttle response and improve acceleration by significantly reducing the rotating mass on your engine. Unlike heavy factory pulleys, this lightweight upgrade allows the engine to rev more freely, providing a more lively and willing feel without the need for additional tuning or supporting modifications.

Each pulley is precision CNC-machined from a single billet of 6061-T6 aluminum to exacting tolerances, ensuring a perfect factory-style fit and long-term durability. By reducing rotating inertia by up to 85%, this kit offers a tangible performance advantage while maintaining the reliability and performance of your driven accessories.

• Significantly improves throttle response and engine "urge"
• Reduces rotating inertia by up to 85%
• Precision CNC-machined from 6061-T6 billet aluminum
• Direct bolt-on replacement for the factory pulley
• No negative impact on alternator or accessory performance
• No engine tuning or modifications required
• Manufacturer Part Number: 2221

Fits 2013-2020 Subaru BRZ, Scion FR-S, and Toyota 86. This GFB Lightweight Pulley Kit is designed to sharpen throttle response and improve acceleration by significantly reducing the rotating mass on the engine.

Each pulley is precision CNC-machined from a single billet of 6061-T6 aluminum to exacting tolerances. By replacing the heavy factory pulleys with these lightweight alternatives, you can achieve up to an 85% reduction in rotating inertia without the need for additional engine tuning or supporting modifications. This kit offers a direct bolt-on performance advantage while maintaining the factory diameter to ensure there are no negative effects on the performance of driven accessories like the alternator and water pump.

• Material: 6061-T6 Billet Aluminum
• Finish: Precision CNC Machined
• Reduces rotating inertia by up to 85%
• Includes Crankshaft, Alternator, and Water Pump pulleys
• Manufacturer Part Number: 2016
• Direct replacement for OE pulleys; no tuning required

Fits select 2003-2020 Subaru WRX, WRX STI, Forester, and Legacy models.

The GFB lightweight pulley kit provides a significant improvement in engine response by reducing the rotating mass on the crankshaft. This reduction in parasitic drag allows the engine to rev more freely, resulting in sharper throttle response and faster acceleration. Unlike heavy cast-iron factory pulleys, this kit is precision CNC-machined from a single billet of 6061-T6 aluminum for maximum strength and weight savings without compromising the performance of your driven accessories.

• Up to 85% reduction in rotating inertia for faster throttle "urge"
• CNC-machined from high-grade 6061-T6 billet aluminum
• Direct bolt-on performance with no tuning or supporting modifications required
• Maintains factory accessory drive ratios and performance
• Manufacturer Part Number: 2014
• Includes a 3-piece pulley set

Fits all 1990-1996 Nissan 300ZX models, including Base, Turbo, and 2+2 variants.

Improve your engine's responsiveness and acceleration with the GFB Lightweight Crank Pulley. By significantly reducing the rotating mass on the crankshaft, this pulley allows the engine to rev more freely, providing sharper throttle response and a more lively feel throughout the RPM range. Unlike heavy cast factory units, this kit reduces rotating inertia by up to 85% without compromising the performance of your driven accessories.

Every GFB pulley is precision CNC-machined from a single billet of 6061-T6 aluminum to exacting tolerances. This is a direct bolt-on performance upgrade that requires no additional supporting modifications or engine tuning to install and enjoy.

• Replaces heavy factory crank pulley to reduce rotational inertia
• Precision CNC-machined from 6061-T6 billet aluminum
• Up to 85% reduction in rotating mass
• Improves throttle response and acceleration
• Direct bolt-on installation; no tuning required
• Manufacturer Part Number: 2006