In addition to the remap, the vehicle also receives a performance supercharger upper pulley, made of high grade stainless steel, precision engineered for a tight precise fit and good grip onto the drive belt. The remap has also been altered in comparison to the level one remap specifically for this supercharger pulley add on. The remap and supercharger pulley work together thus giving a huge increase in power and torque throughout the entire rev range. 3.0 supercharged engine (not available) 4.2 supercharged engine £775 kit supplied and installed at B496EH gains upto 55bhp. or £795 shipped globally (fitting not included) but does include the pulley and a tool to install the remap remotely. We will help you with this remotely. Professional install of the pulley will be required by a local competent technician. 5.0 supercharged engine £775 kit supplied and installed at B496EH gains upto 100bhp. or £795 shipped globally (fitting not included) but does include the pulley and a tool to install the remap remotely. We will help you with this remotely. Professional install of the pulley will be required by a local competent technician.