GFB T9404 Whistling Trumpet VTA for Ford EcoBoost Raptor/Mustang/Bronco

GFB T9404 Whistling Trumpet VTA Blow-Off Valve for Ford EcoBoost Raptor / Mustang / Bronco

The GFB T9404 Whistling Trumpet VTA Blow-Off Valve is engineered for enthusiasts who demand both performance and an unmistakable sound from their turbocharged Ford EcoBoost platform. Designed as a direct bolt-on upgrade for vehicles equipped with an electronic factory diverter valve, this high-performance blow-off valve delivers faster response, superior boost control, and a signature vent-to-atmosphere sound that transforms every throttle lift into an attention-grabbing experience. With its patented pilot-operated design, the VTA provides improved throttle response and drivability by venting only the precise amount of pressure needed—helping reduce turbo stress while maintaining boost for quicker spool between shifts. Built from precision CNC-machined components, this valve ensures durability, reliability, and consistent performance under high boost conditions. Whether configured for a classic “whoosh” or an aggressive whistle using the included trumpet, the T9404 offers unmatched sound customization for drivers who want their vehicle to stand out.

Key Features

• Dual sound configuration with removable trumpet for “whoosh” or loud whistle effect
• Adjustable spring pre-load for customized blow-off timing and duration
• Patented pilot-operated valve design for progressive venting
• Integrated solenoid in a compact “over/under” configuration
• Direct bolt-on replacement for factory electronic diverter valve
• CNC-machined metal components with durable elastomer piston seal
• Lightning-fast response, faster than OEM electronic diverter valves
• Designed to prevent compressor surge and protect turbocharger

Benefits

• Enhances throttle response and overall drivability
• Maintains boost pressure for quicker turbo spool and improved acceleration
• Eliminates boost leaks common in factory plastic diverter valves
• Reduces turbo stress, heat, and exhaust backpressure
• Delivers aggressive, customizable blow-off sound for performance enthusiasts
• Improves engine efficiency and power consistency
• Built for long-term durability under high boost conditions
• Backed by manufacturer warranty for confidence and reliability

Product Specifications

• Part Number: T9404
• Material: CNC-machined billet aluminum and high-quality alloy components
• Finish: Black anodized with precision-machined accents
• Valve Type: Vent-to-atmosphere (VTA) blow-off valve
• Adjustment: Adjustable spring pre-load
• Sound Options: Whistle (with trumpet) or traditional blow-off “whoosh”
• Design: Pilot-operated piston with integrated electronic solenoid
• Fitment Type: Direct bolt-on replacement
• Profile: Low-profile compact design for tight engine bays

Install Difficulty Level

Installation is straightforward and beginner-friendly, thanks to the direct bolt-on design and integrated solenoid. Most installations can be completed in approximately 30 minutes using basic hand tools, making it an easy upgrade for both DIY enthusiasts and professional installers.

Vehicle Fitment

• 2014–2023 Ford Mustang S550 2.3L EcoBoost
• 2019–2021 Ford Ranger 2.3L EcoBoost
• 2022–Present Ford Ranger Raptor 3.0L EcoBoost
• 2021–Present Ford Bronco 2.3L, 2.7L, and 3.0L EcoBoost
• 2019–Present Ford Explorer 2.3L EcoBoost
• 2019–Present Ford Focus ST 2.3L EcoBoost (Mk4)
• 2015–2018 Ford Focus 1.5L / 1.6L EcoBoost (Mk3)
• 2019–Present Ford Focus 1.5L EcoBoost (Mk4)
• 2012–Present Proton Preve 1.6 CFE

CARB Compliance

This product is not currently CARB approved and is not assigned a CARB EO number. It is intended for off-road or competition use where emissions regulations do not apply.

For additional questions about compatibility, performance benefits, or to report any product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.