Description
Upgrade your turbocharged Mitsubishi's boost control system with the COBB Tuning LF Bypass Valve (BPV), designed for compatible 2008–2015 Mitsubishi Lancer Evolution X and 2009–2015 Mitsubishi Lancer Ralliart models. Engineered to handle high boost pressure while maintaining reliable sealing, this compact, lightweight bypass valve is an excellent upgrade for street-driven and performance-focused vehicles.
The COBB LF Bypass Valve features an updated internal design that reduces control volume by 30%, allowing faster response when venting excess boost pressure. Its lightweight moving components have less inertia than heavier designs, helping the valve respond quickly when activated.
A redesigned banjo-fitting vacuum port provides 360-degree hose-routing adjustability, simplifying installation and reducing potential leak points associated with traditional threaded ports. The updated piston O-ring seal is twice the diameter of the previous design, providing greater seal compression and helping reduce wear.
The revised spring and seal design also delivers a 60% increase in clamping force at peak boost while maintaining similar operation at idle and during transient loads. Unlike some adjustable bypass valves, the LF BPV does not require spring-seat adjustment.
Designed to recirculate pressurized intake air back into the intake tract, the COBB LF Bypass Valve helps maintain proper operation of the turbocharged engine management system. According to COBB Tuning, installing this valve does not require additional tuning when used in a compatible application.
Key Features
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Brand: COBB Tuning
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Product: LF Bypass Valve (BPV)
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Part Number: 752665
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Compact and lightweight construction.
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Designed to hold high boost pressure while maintaining a reliable seal.
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Updated design reduces control volume by 30% for faster response.
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Lightweight internal components help reduce moving-part inertia.
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Banjo-style vacuum fitting provides 360-degree hose-routing adjustability.
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Enlarged piston O-ring seal provides greater compression and helps reduce wear.
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Revised spring and seal design increases clamping force by 60% at peak boost.
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Maintains similar operation at idle and during transient loads.
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No spring-seat adjustment required.
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Designed for recirculating bypass valve operation.
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Supports compatible factory and modified turbocharged applications.
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Manufacturer states that additional tuning changes are not required for this valve when installed on a supported application.
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Emissions Certification: CARB EO D-660-12, 50-state legal when used according to the manufacturer's application guide.
Technical Specifications
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Valve Type: Recirculating bypass valve
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Design: Lightweight piston-style valve
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Vacuum Port: Banjo fitting with 360-degree adjustability
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Control Volume: Reduced by 30% compared with the previous design
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Peak-Boost Clamping Force: Increased by 60% compared with the previous design
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Seal Design: Enlarged piston O-ring
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Tuning Requirement: No additional tuning changes required according to COBB Tuning for compatible applications
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Emissions Status: CARB EO D-660-12
Fitment
2008–2015 Mitsubishi Lancer Evolution X
2009–2015 Mitsubishi Lancer Ralliart
Compatible Evolution X applications include supported GSR, MR, SE, and Final Edition configurations, depending on model year and transmission.
Fitment Note: Confirm the exact model year, trim, transmission, and vehicle specification before ordering. The manufacturer's confirmed application list should be used to verify compatibility.
Installation & Compatibility Notes
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Confirm that the valve is compatible with the vehicle's existing turbocharger and intake configuration.
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Ensure the vacuum hose and recirculation connections are properly installed and secured.
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The banjo-style vacuum fitting allows flexible hose routing during installation.
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Additional tuning changes are not required according to COBB Tuning for compatible applications.
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Follow the manufacturer's installation instructions to ensure proper sealing and operation.
Emissions & Compliance Information
The COBB LF Bypass Valve carries CARB Executive Order D-660-12 and is listed as legal for sale and use on emissions-controlled vehicles in all 50 U.S. states when installed and used according to the manufacturer's application guide.
California Proposition 65 Warning
WARNING: This product may expose you to chemicals known to the State of California to cause cancer and reproductive harm.
