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GFB’s DV+ solution couldn’t be simpler - keep what works and replace what doesn’t.
Worldwide Patent and Design Patent Pending
GFB expands the DV+ range with a direct-fit solution for the weak factory diverter valve used on many European vehicles.
The solenoid coil itself from the factory-fitted valve is great (the ECU opens it faster than any pneumatic valve so why replace it?), but the weak point however is the valve mechanism itself. So GFB’s DV+ solves this problem by replacing just the valve parts with an anodised billet aluminium housing fitted with a brass piston machined to exacting tolerances.
The end result is sharper throttle response, lightning-fast valve actuation, and it will hold as much boost as you can throw at it. Read all about the DV+ story on the next page.
Other manufacturers’ products involve replacing the entire system with a traditional pneumatic valve, requiring long vacuum hose runs, additional parts for tapping into the intake manifold vacuum, plus either a different solenoid valve to actuate the pneumatic valve or a ballast resistor to plug into the OE wiring loom. All these additional items result in a product that is slower, less responsive, more expensive and takes much longer to install.
GFB’s DV+ solution on the other hand is more responsive, less expensive, easier to install, and doesn’t cause compressor surge/turbo flutter. Oh, and it doesn’t require different springs or frequent re-builds.
Many late-model European cars use ECU controlled solenoid-type diverter valves. This is a good concept because the valve can react very quickly and it only opens when it needs to.
However, there are some problems with these valves. There are typically two types of solenoid-actuated diverter valves found standard on VAG and European cars, both of which have their shortcomings.
Common OE Problem #1
The diaphragm types are commonly known to rupture, especially when boost and temperature are increased as a result of chip tuning.
Common OE Problem #2
The plastic piston-type leaks far more than most people realise (by design, not from wear), and doesn’t always close after a high-boost gear shift.
Additionally, in both cases, the solenoid on the OE diverter is directly connected to the valve mechanism, which is not ideal because neither it nor the return spring are strong enough to open and close the valve reliably at high boost.
With problems like this, you can see why other aftermarket manufacturers assume the best solution is to replace the factory diverter entirely. Unfortunately though, whilst their replacement kits might be stronger than the factory diverter, their slower response speed and lower flow do not justify the extra cost and complexity - more of a compromise than a solution.
GFB has taken a different approach to deliver a complete solution that solves existing problems and improves performance, without compromise or a hefty price tag.
The DV+ addresses the factory valve problems with a very simple and elegant solution. Keeping the factory solenoid retains all the benefits of the stock system, and replacing the valve parts with indestructable metal components ensures strength and reliability no matter how much boost you run.
That's not all. Rather than using the solenoid to directly actuate the valve, we’ve introduced a unique “pilot-actuation” system. This means the solenoid controls the air pressure that is used to open and close the piston, so it doesn't matter how much boost you push through it, the DV+ will open and close reliably without ever exceeding the solenoid’s capability.
This feature also improves on the factory system by opening the valve progressively in response to boost pressure, so it only opens as much as required to get the job done (the factory valve simply opens and shuts, it cannot partially open if boost pressure is low), resulting in better throttle response.
Elevate your Mini Turbo Models, including Cooper S and JCW, with the ALTA BOV Spring Upgrade. This replacement spring offers a cost-effective, high-performance solution for your stock Blow Off Valve (BOV). By holding more boost between shifts, it significantly reduces turbo lag, enhancing overall performance. The carefully designed stiffer spring ensures normal BOV operation while maintaining increased pressure in the boost tubes, preventing power gaps.
Improve your BMW's performance with the ALTA Performance Open Cell foam filter, designed to enhance horsepower, filtration efficiency, and ease of installation. This direct replacement filter is compatible with all ALTA Cold Air Intake Systems and universal applications requiring a 2.75" mouth filter.
Elevate your car's performance with the ALTA Cold Air Box, precision-crafted from laser-cut aluminum sheet metal and expertly CNC bent to perfection. This airbox is not only a performance enhancer but also a protector, thanks to its durable black texture powder coating, offering long-term protection with an OEM-inspired appearance.
Key Benefits of the ALTA Cold Air Box:
The high-flow foam filter included with the ALTA Cold Air Box is designed to reduce intake restriction and increase the surface area for clean air ingestion. Unlike cotton and gauze filters, foam filters offer multi-layer filtration, trapping dirt at various levels. This results in improved particulate restriction without compromising horsepower as the filter accumulates dirt.
The ALTA Cold Air Intake System for R53 6-speed manual is available in black or red texture powder coating, allowing you to customize the appearance to your preference.
MINI R52 R53 Intercooler Couplers Red - Pair offer a stylish and practical upgrade for your MINI's intercooler system. These high-temperature silicone couplers replace the OEM rubber connectors on either side of the intercooler, addressing common issues such as lost horsepower, decreased fuel economy, and poor drivability.
The MINI R52 R53 Intercooler Couplers Red - Pair provide the following benefits:
GFB is proud to introduce an extended DV+ range, offering a direct-fit solution for the factory diverter valve used in a wide range of European vehicles. This innovative product is engineered to enhance both performance and reliability.
Specifically designed for the N14 MINI Cooper S/ JCW Engine, GFB's DV+ is the ideal solution to optimize your vehicle's diverter valve.
ALTA Cold Air Intake System, specially designed for the R53 6-speed manual. Crafted from laser-cut aluminum sheet metal and precision CNC bent, this intake system ensures perfection in form and function. Finished with a durable black texture powder coating, it not only offers long-term protection but also delivers an OEM appearance.
The airbox of the ALTA Cold Air Intake seals to the underside of the hood, effectively preventing under-hood heat from infiltrating the intake airstream. This enhancement ensures cooler, denser air intake, resulting in improved engine performance. With the ALTA intake system, your BMW will produce a distinct throaty, deep tone on throttle, accentuating its modified nature. Additionally, it amplifies the sound of your supercharger, whether stock or aftermarket.
Featuring a high-flow foam filter, this intake system significantly reduces intake restriction while expanding the surface area for the engine to intake clean air. Unlike cotton or gauze-type filters, the foam-based filter facilitates multi-layer filtration, effectively trapping dirt at various levels. This superior filtration capability results in improved particulate restriction without compromising horsepower, even as the filter accumulates dirt.
MINI R55 to R61 Foam Filter Panel features high-flowing, super-cleaning foam media that enhances air intake efficiency while maintaining excellent dirt-holding capacity. This advanced design allows for a thinner filter with double the volume compared to the OEM intake box, promoting superior airflow and performance.
The MINI R55 to R61 Foam Filter Panel offers several key benefits:
MINI R52 R53 Cold Air Intake System Automatic - Black is engineered to enhance your MINI's performance with a sleek and durable design. The ALTA Cold Air Box is meticulously crafted from laser-cut aluminum sheet metal and CNC bent for precision. Finished in a rich black texture powder coating, it offers long-term protection and a stylish OEM look. This airbox seals tightly to the underside of the hood, preventing under-hood heat from contaminating the intake airstream.
With the ALTA intake system, your vehicle will produce a deep, throaty tone under throttle, making the presence of your supercharger unmistakable. The high-flow foam filter improves airflow and increases the surface area for clean air intake, featuring multi-layer filtration for superior dirt capture without reducing horsepower as it accumulates dirt.
The ALTA Cold Air Intake System consistently delivers a 10-12 WHP gain and is available in black or red texture powder coating.