Respons/Deceptor Pro Whistling Trumpet Over 12Psi [5701]

The GFB Whistling Trumpet 5701 is a popular upgrade for those looking to change the sound of their Blow-Off Valve. Released in 2004, this trumpet produces a piercing screech when driving aggressively. It is specifically designed for GFB valves T9003 and T9503 and can be used in place of the standard trumpet.

To achieve the desired whistling sound, it is essential to configure the valve so that most or all of the air vents through the trumpet. Typically, Respons valves may not generate enough airflow velocity to produce the whistle if they are set to 50/50 venting.

The 5701 trumpet is recommended for use with part numbers T9003 and T9503 for a more aggressive, high-pitched whistle.

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