A WORLD FIRST in blow-off valve technology, the Deceptor Pro is based on the patented volume adjustable Stealth FX blow-off valve, but advances the design even further, featuring an industry world first: electronic proportional in-car adjustment of blow-off valve volume! It is no longer possible to cruise the street with a permanently noisy blow-off valve - the Deceptor Pro lets you choose when and where you are noticed!Deceptor Pro features Remote, proportional blow-off valve volume control – from silent to loud, and anywhere in between Modern and compact in-car BOV ‘volume controller' Volume adjustment mechanism driven by a high-torque electric motor Durable, low friction gear train supported by sealed precision ball-bearings Supplied with all parts and wiring necessary to have it up and running quickly and easily The Deceptor Pro also includes trademark GFB design features Ertalyte™ piston ring – to maintain the integrity of the vacuum signal, without the maintenance issues of an o-ring Acetal™ piston seat – for a positive seal under boost and a long, maintenance free life Lightweight piston – for fast valve response 360° rotating vacuum nipple - for neat installations Low profile, user friendly spring adjustment mechanism – no tools required