Description
Enhance your vehicle’s blow-off valve sound with the Go Fast Bits GFB Part 5701 Whistling Trumpet. Designed specifically for use with GFB valves (Part numbers T9003 & T9503), this trumpet replaces the standard component to produce a distinctive whistling sound during operation. Proper installation ensures that most of the air vents through the trumpet, creating the desired auditory effect. Keep in mind that Respons valves typically do not generate enough velocity to whistle when set to 50/50 venting, so optimal performance depends on your specific setup. This feature allows enthusiasts to customize their vehicle’s sound, making it stand out and adding a personal touch to their driving experience. The trumpet is compatible with the Stealth FX and WRX Hybrid models, providing an easy upgrade for those looking to modify their blow-off valve acoustics. Constructed by Go Fast Bits, this part is built to meet quality standards, ensuring reliable performance and durability in automotive applications. It is important to note that the trumpet is not CARB approved, and acknowledgment of Prop 65 compliance is required before installation. Designed for air-driven systems over 12 psi, it offers a simple way to enhance the auditory feedback of your vehicle’s forced induction system. Installation is straightforward for those familiar with blow-off valve components, making it a popular choice among tuners and automotive enthusiasts seeking a unique sound profile.
Features:
- Designed for use with GFB valves (Part numbers T9003 & T9503)
- Produces a distinctive whistling sound during operation
- Compatible with Stealth FX and WRX Hybrid models
- Easy to install as a replacement for standard trumpets
- Constructed by Go Fast Bits for reliable performance
- Not CARB approved; acknowledgment of Prop 65 required
- Suitable for air systems over 12 psi



























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