Planning to increase the power and performance of your hot rod with a blower or turbo? The Go EFI 4 Series Power Adder System Kit is just the ticket you need to replace a blow-through carburetor, or it also looks right at home atop of a roots-style blower! This system is capable of supporting up 21.7 lb. of boost right out of the box, as well as a single stage of wet nitrous. The air/fuel ratio is monitored and adjusted with FiTech’s fast-reacting self-learning technology, plus the ignition timing can be controlled based on boost or nitrous (including a retard feature). Most of the settings can be controlled through the touchscreen handheld monitor, but this system also comes with Pro-Tuning software to run on a laptop for even more specific mapping and tuning.