The blow off valve adapter has been designed to give you the atmospheric blow off sound you are looking for on your Turbo. A simple bolt on modification that is compatible with the factory ECU and does not cause a CEL. Completely reversible. Well thought out blow off valve, adjustable from loud to mute Fully usable Ingenious whistle - very sound Application: adapter for punto 1.4 multiair() Please allow a little error due to manual measurement. of your understanding. All items should be fitted by a professional and instructions are not included for this reason. Professional required Material: Aluminum Color: Black Package Contents: 1 x Blow Off Valve Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.