GFB DV+ T9357 – BMW Performance Diverter Valve Upgrade

Modern BMW turbo engines rely heavily on electronically controlled diverter valves, but the factory units often compromise performance due to plastic internals and a binary open/closed operating method. The GFB DV+ T9357 is engineered to address these weaknesses while retaining full factory ECU control.

Rather than replacing the entire diverter valve assembly, the DV+ upgrades the internal valve mechanism using precision-machined metal components and a robust sealing system. This allows the valve to hold boost more reliably, particularly under increased load or modified boost levels.

Sharper Throttle Response & Faster Boost Recovery

The factory BMW diverter valve operates in a simple on/off manner, which can lead to inconsistent boost delivery during partial throttle inputs. The DV+ utilises GFB’s proven pilot-actuation system, allowing the valve to respond progressively to boost pressure. The result is smoother throttle modulation and quicker boost recovery between gear shifts.

Built for Reliability

High under-bonnet temperatures and elevated boost levels can cause premature failure of OEM plastic diverter valves. The DV+ T9357 replaces these vulnerable components with durable metal internals and a high-quality sealing surface designed to perform reliably in demanding conditions.

Direct Fit, No Noise

The DV+ T9357 is a fully recirculating design, meaning there is no added blow-off noise. It installs directly in place of the factory diverter valve, using the original solenoid and electrical connection for a true plug-and-play upgrade.

• Improved boost holding
• Sharper throttle response
• Faster boost recovery after gear changes
• Retains factory ECU control
• Fully recirculating – no added noise
• Direct bolt-on installation

Designed and manufactured by GFB, the DV+ T9357 delivers a genuine performance improvement without compromising drivability or reliability.