Bonalume Adjustable Blow Off Valve Spacer

The Bonalume Adjustable Blow Off Valve Spacer adds an exciting and adjustable blow-off sound to MultiAir engines without compromising performance. Designed for quick installation, this spacer enhances the driving experience by delivering a crisp, controlled “power-pop” during gear changes and lift-off.

Most importantly, the system works without altering the factory engine management.

Adjustable Sound Control

This adjustable blow off valve spacer allows you to fine-tune the sound intensity to match your driving style. By simply rotating the built-in adjustment cursor, you can activate, reduce, or completely deactivate the sound output. As a result, you remain in full control at all times.

Whether you prefer a subtle release or a more aggressive vent sound, adjustment takes only seconds.

No Performance Loss or Engine Interference

Unlike many aftermarket solutions, this spacer does not require any electrical or pneumatic connections. Therefore, it integrates seamlessly with the original system. In addition, it does not interfere with boost control, engine reliability, or drivability.

The design ensures consistent operation with no negative impact on engine performance.

Quick and Simple Installation

Installation takes approximately 10 minutes and requires no specialist tools. Because it fits directly between the original valve components, the upgrade is fully reversible. Consequently, it is ideal for owners who want a noticeable sound upgrade without permanent modifications.

Key Features of the Bonalume Blow Off Valve Spacer

• Adjustable blow-off sound intensity

• Produces a distinctive power-pop on lift-off

• Simple mechanical adjustment via rotating cursor

• No electrical or pneumatic connections required

• No impact on engine performance or reliability

• Fast installation in approximately 10 minutes

• Fully reversible, plug-and-play design