GFB DV+ T9367 diverter valve for Toyota/Lexus turbo models

DV+ for Toyota and Lexus turbo engines

GFB DV+ is a simple solution – keep what works and replace what does not.

• Uses the factory solenoid coil for seamless integration.
• Replaces the valve’s plastic components with metal ones, providing greater strength and reliability – especially on modified engines.
• Direct replacement for the original valve with GFB TMS system enhancements.
• Exclusive valve mechanism controlled via a pilot valve for rapid response at high boost pressure.

The original solenoid coil in the factory-fitted valve works very well – the engine control unit opens it faster than any pneumatic valve, so there is no need to replace it. The weak point is the valve mechanism. GFB DV+ solves this issue with an anodised machined aluminium housing and a brass piston manufactured to very precise tolerances.

The result is improved throttle response, very fast valve operation and reliable boost pressure retention. Products from other manufacturers often replace the entire system with a conventional pneumatic valve or include an additional solenoid valve. This solution means more parts and unnecessary costs.

More performance, faster boost pressure recovery and no unnecessary parts.

The DV+ system story: improved operation and greater reliability

Current Toyota and Lexus turbo engines use a solenoid-operated diverter valve controlled by the engine control unit. Although these valves have been used since the mid-2000s, they still have significant reliability and performance shortcomings that the DV+ system eliminates.

Problem 1: leakage

The original diverter valve uses a piston that cannot be effectively sealed because of its injection-moulded plastic design. The result is enough leakage to make the turbocharger spool more slowly and cause a drop in boost pressure at high rpm.

DV+ ensures that boost pressure reaches the engine with a bonded silicone seal, precisely specified clearance between the piston and bore, and the appropriate surface finish.

Problem 2: reliability

With the original diverter valve, the solenoid coil must move the piston through a long stroke, which significantly reduces the magnetic force available to open the piston. This requires a weaker return spring, leaving little reserve when boost pressure or friction in the valve assembly increases. This can cause sticking and reliability issues.

The same issues also occur with other performance products that retain the original solenoid coil and continue to move the piston directly through a long stroke.

DV+ solves this issue by using the solenoid coil to control a short-stroke pilot valve. This provides a very fast response and greater actuation force. The pilot valve uses boost pressure to open and close the piston, so the operating forces are directly proportional to boost pressure and the piston responds accordingly. At low pressure, the piston opens only slightly, while at high pressure it opens fully. When the solenoid coil is switched off, boost pressure quickly closes the piston. This allows DV+ to eliminate sticking caused by friction and weak solenoid coil force, while preventing the valve from opening at high boost pressure.

DV+ is a high-performance diverter valve solution with a very fast response, improved operation and high reliability.

Weight: 0.20 kg

Suitable for: Lexus NX I (AYZ10/AGZ10).