Find Parts that fit Your Car
Full GFB Range Now Live in Our Store (Go Fast Bits)
If you’ve been building (or planning) a properly sorted boosted setup, you already know GFB isn’t just “a blow-off valve brand”. Go Fast Bits covers the turbo-management ecosystem — pressure relief, boost control hardware, and fuel system control — with parts built to handle real boost, real heat, and real daily use.
We’ve now listed the full GFB range in-store, so you can spec your setup properly without mixing random parts from three brands and hoping they behave together. From factory-upgrade diverter valves through to external wastegates and fuel pressure regulation, GFB parts are aimed at enthusiasts who want repeatable performance, not just noise.
Who GFB Parts Are Really For
GFB is a natural fit for the turbo and supercharged crowd — street cars that need better response and reliability, track cars that see sustained heat, and tuned builds where factory control hardware becomes the limiting factor. If you’re chasing sharper response, stable boost control, and consistent fueling under load, GFB sits firmly in the “buy once, fit once” category.
- Sharper boost response without unwanted compressor behaviour
- More stable boost control as exhaust flow and heat increase
- More consistent fueling for tuned setups and higher demand use
Wastegates: Small Packaging, Big Control
Wastegate choice is one of those things you don’t “feel” when it’s right — but you absolutely notice when it’s wrong. If you’re increasing boost targets, changing turbo hardware, or pushing a setup harder for longer, wastegate control becomes the difference between a car that’s consistent and a car that’s always chasing its tail.
GFB wastegates are designed with compact packaging, heat management, and flow in mind — the stuff that matters when space is tight and temperatures are high. If your build needs an external gate solution that’s made for hard use, this is where you start.
Browse: Wastegates
Diverter Valves: The “Driveability Mod” People Forget
On many modern turbo cars, the factory diverter valve can become inconsistent as boost and heat rise — and even when it doesn’t “fail”, it may not behave consistently under load. That inconsistency shows up as soft response, messy transitions, or boost that feels different pull-to-pull.
GFB’s diverter valve and BOV range covers quiet plumb-back options through to louder venting setups, depending on what you want the car to do and how you want it to feel. For most enthusiasts, the real win is not the sound — it’s the clean, repeatable response between shifts and on throttle transitions.
Browse: Diverter Valves
Fuel Management: Stable Fuel Pressure = Stable Tune
Fueling is where “almost good” setups fall over. Once demand rises (more boost, more airflow, ethanol blends, upgraded pumps/injectors), the system needs to maintain stable pressure under load. That stability is what keeps power delivery consistent and protects the engine when you’re leaning on it.
GFB fuel management products are designed for the real-world requirements of modified cars — consistent pressure behaviour, robust construction, and proper sealing. If you’re building beyond a basic intake/exhaust setup, fuel system control is not optional if you want the car to stay consistent.
Browse: Fuel Management
Important: Some GFB Upgrades Require ECU Calibration
Upgrading components that affect boost control, airflow, or fuel delivery changes how the ECU sees and manages the engine. While the vehicle may still start and drive after hardware installation, the factory calibration is no longer matched to the new control behaviour.
Common symptoms without recalibration include unstable boost control, over- or under-boost conditions, throttle closure under load, inconsistent torque delivery, incorrect fuel pressure compensation, or trims operating outside their intended range.
When GFB components are installed as part of a staged upgrade, an ECU remap allows the control strategies to be recalibrated so requested boost, wastegate duty, diverter valve behaviour, load calculation, and fueling targets operate as intended with the new hardware.
- Best for: turbo upgrades, external wastegate conversions, increased boost targets, fuel system changes, or ethanol-based setups.
- Outcome: stable boost control, predictable torque delivery, correct air-fuel ratios under load, and repeatable performance across operating conditions.
