Dieselsite Boost Relief Valve - 1994-2003 Ford F-Series

DieselSite Boost Relief Valve (BRV+) – 7.3L Powerstroke

Eliminate SES lights caused by overboost while maintaining full boost and fuel delivery with the DieselSite BRV+ Boost Relief Valve. Designed specifically for modified or “chipped” 7.3L Powerstroke trucks, this valve protects the MAP sensor from excessive pressure without limiting actual engine boost.

🔥 Key Features:

• Stops Overboost SES Light – Prevents PCM defueling triggered around ~25 PSI

• Maintains Full Boost – Relieves pressure only to the MAP sensor, not the engine

• BRV+ Design with Gauge Ports – Monitor MAP sensor pressure and true boost

• CNC Machined Precision Valve – Exact orifice sizing ensures consistent, reliable operation

• Lightweight & Clean Install – Reduced weight with a compact, professional appearance

• Mechanical Solution – No electronics, no tuning required

⚙️ How It Works:

On modified trucks, the PCM will trigger an SES light and reduce fuel delivery when it detects overboost at the MAP sensor. The BRV+ vents excess pressure before it reaches the MAP sensor, allowing the engine to continue receiving full boost while keeping the PCM satisfied.

🧰 Installation Overview:

• Installs inline on the MAP sensor hose

• Located on the passenger side, running over the intercooler tube behind the oil fill

• Arrow must point toward the MAP sensor

• Ports come pre-plugged if not using boost gauges

📊 Boost Gauge Ports (BRV+):

• Two 1/8" NPT ports included

• Allows you to monitor:

  • Actual boost

  • MAP sensor boost

• Ports are plugged from the factory

• Boost gauges typically include fittings, otherwise use:

  • 1/8" NPT x 1/8" compression fitting

🛠️ Maintenance Notes:

• Valve is mechanical and extremely reliable

• If sticking occurs after long storage, apply light lubricant (WD-40 or similar)

• Pull the ring a few times to free movement

• Occasional lubrication (about once per year) is recommended

⚠️ Important Notes:

• SES lights are not always caused by overboost

• Always scan and verify fault codes

• There is no code labeled “overboost”

• If installed correctly and not sticking, the BRV+ cannot fail to prevent overboost defueling

If you’re running a tuned or modified 7.3L Powerstroke and want full boost without SES lights or fuel cut, the DieselSite BRV+ Boost Relief Valve is a proven, precision-built solution trusted across the Powerstroke community.