APEXI AVC-R Boost Controller Black Model (420-A005/420-X905)Product Name AVC R Boost Controller (Black Model) Code No. 420 A005 (420 X905) Product Description The AVCR is a digital boost controller that allows the user to modify the boost pressure level on turbocharged vehicles. While there are many boost controllers on the market, none of the other includes as many features as the AVCR, period. Despite all of the complex features included the unit, the AVCR is flexible enough to be used by beginners. Entry